diff --git a/include/code_8066D04.h b/include/code_8066D04.h
deleted file mode 100644
index 227aa9bf3..000000000
--- a/include/code_8066D04.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef GUARD_CODE_8066D04_H
-#define GUARD_CODE_8066D04_H
-
-void HandleSetItemAction(Entity *, bool8);
-
-#endif // GUARD_CODE_8066D04_H
diff --git a/include/dungeon_action_handler.h b/include/dungeon_action_handler.h
new file mode 100644
index 000000000..9816b3de8
--- /dev/null
+++ b/include/dungeon_action_handler.h
@@ -0,0 +1,24 @@
+#ifndef GUARD_DUNGEON_ACTION_HANDLER_H
+#define GUARD_DUNGEON_ACTION_HANDLER_H
+
+#include "structs/dungeon_entity.h"
+
+void HandlePickUpPlayerAction(Entity *entity);
+void HandleSetItemAction(Entity *param_1, bool8 param_2);
+void HandleUnsetItemAction(Entity *entity, bool8 enableMessage);
+void HandleGiveItemAction(Entity *param_1);
+void HandleTakeItemAction(Entity *param_1);
+void sub_8066BD4(Entity *param_1);
+void HandleUseItemAction(Entity *param_1);
+void HandlePlaceItemAction(Entity *entity);
+void sub_8066E14(Entity *entity);
+void sub_8066FA4(Entity *entity);
+void sub_8067110(Entity *entity);
+void sub_80671A0(Entity *entity);
+void HandleTalkFieldAction(Entity *entity);
+void sub_806752C(ActionContainer *a0);
+void sub_8067768(ActionContainer *a0);
+void HandleUseMovePlayerAction(Entity *entity);
+void sub_8067904(Entity *entity, u16 moveId);
+
+#endif // GUARD_DUNGEON_ACTION_HANDLER_H
diff --git a/include/dungeon_ai.h b/include/dungeon_ai.h
index bed4431c0..72dab1808 100644
--- a/include/dungeon_ai.h
+++ b/include/dungeon_ai.h
@@ -4,5 +4,6 @@
 #include "structs/dungeon_entity.h"
 
 void RunMonsterAI(Entity *pokemon, u32 unused);
+void sub_8075BA4(Entity *param_1, u8 param_2);
 
 #endif
diff --git a/include/dungeon_ai_attack.h b/include/dungeon_ai_attack.h
index 8f5b31c83..70781a844 100644
--- a/include/dungeon_ai_attack.h
+++ b/include/dungeon_ai_attack.h
@@ -21,5 +21,8 @@ bool8 IsAITargetEligible(s32 targetingFlags, Entity *user, Entity *target, Move
 s32 WeightMove(Entity *user, s32 targetingFlags, Entity *target, u32 moveType);
 bool8 TargetRegularAttack(Entity *pokemon, u32 *targetDir, bool8 checkPetrified);
 bool8 IsTargetInRange(Entity *pokemon, Entity *targetPokemon, s32 direction, s32 maxRange);
+void HandleUseMoveAIAction(Entity *target);
+void HandleUseOrbAction(Entity *pokemon);
+s16 GetMoveTargetAndRangeForPokemon(Entity *pokemon, Move *move, bool32 isAI);
 
 #endif
diff --git a/include/dungeon_ai_items.h b/include/dungeon_ai_items.h
index 960b33009..f9b36c588 100644
--- a/include/dungeon_ai_items.h
+++ b/include/dungeon_ai_items.h
@@ -8,5 +8,9 @@ void AIDecideUseItem(Entity *pokemon);
 void GetPossibleAIThrownItemDirections(Entity *pokemon, s32 thrownAIFlag, Item *item, bool8 ignoreRollChance);
 void GetPossibleAIArcItemTargets(Entity *pokemon, Item *item, DungeonPos potentialTargets[], bool8 ignoreRollChance);
 void TargetThrownItem(Entity *pokemon, Entity *targetPokemon, Item *item, s32 targetingFlags, bool8 ignoreRollChance);
+void HandleEatAIAction(Entity *pokemon);
+void HandleThrowItemAIAction(Entity *pokemon);
+void HandlePickUpAIAction(Entity *pokemon);
+void MonTryPickUpItem(Entity *entity);
 
 #endif
diff --git a/include/dungeon_message.h b/include/dungeon_message.h
index 54e7b1ab0..a69b2da2e 100644
--- a/include/dungeon_message.h
+++ b/include/dungeon_message.h
@@ -31,6 +31,7 @@ extern bool8 gUnknown_203B434;
 
 void sub_80521D0(void);
 void sub_8052210(bool8 a0);
+void sub_805229C(void);
 
 // These functions display the string if certain conditions are met. The conditions differ depending on the function. The string is then saved to the message log.
 void LogMessageByIdWithPopupCheckUser(Entity *pokemon, const u8 *str);
diff --git a/include/dungeon_misc.h b/include/dungeon_misc.h
index 01823c666..1ce00a21b 100644
--- a/include/dungeon_misc.h
+++ b/include/dungeon_misc.h
@@ -55,6 +55,7 @@ void sub_806A1B0(Entity *pokemon);
 void sub_806A1E8(Entity *pokemon);
 void sub_806A240(Entity *pokemon, Entity *target);
 void TryPointCameraToMonster(Entity *pokemon, u8 param_2);
+void nullsub_95(Entity *pokemon);
 void sub_806A338(void);
 void sub_806A390(Entity *pokemon);
 void sub_806A3D4(u8 *dst, s32 _a1, s32 id, bool32 _a3);
diff --git a/include/dungeon_util.h b/include/dungeon_util.h
index 0d9c4bb71..1a31a9e94 100644
--- a/include/dungeon_util.h
+++ b/include/dungeon_util.h
@@ -17,9 +17,13 @@ bool8 EntityIsValid(Entity *pokemon);
 u32 GetEntityType(Entity *entity);
 u8 GetEntityRoom(Entity *entity);
 Tile *GetTileAtEntitySafe(Entity *entity);
+void sub_804513C(void);
+void sub_804522C(void);
 void UpdateEntityPixelPos(Entity *entity, PixelPos *pos);
 void SetEntityPixelPos(Entity *entity, s32 x, s32 y);
 void IncreaseEntityPixelPos(Entity *entity, s32 x, s32 y);
+Entity *sub_80453AC(s32 _species);
+Entity *sub_804550C(s32 _species);
 Item *GetItemInfo(Entity *entity);
 Item *GetItemData_1(Entity *entity);
 Trap *GetTrapInfo(Entity *entity);
@@ -27,6 +31,7 @@ Trap* GetTrapData_1(Entity *entity);
 Entity *SpawnTrap(u8 trapID, DungeonPos *pos, u8 c);
 Entity *SpawnItemEntity(DungeonPos *pos);
 void sub_80457DC(Entity* ent);
+bool8 ShouldMinimapDisplayEntity(Entity *ent);
 bool8 ShouldDisplayEntity(Entity *ent);
 bool8 CanSeeTarget(Entity *entity, Entity *targetEntity);
 bool8 CanTargetEntity(Entity *entity, Entity *targetEntity);
@@ -35,6 +40,7 @@ bool8 sub_8045AAC(Entity *entity, DungeonPos *pos);
 bool8 CanTargetPosition(Entity *entity, DungeonPos *pos);
 void SubstitutePlaceholderStringTags(u8 *buffer, Entity *entity, u32 param_3);
 void sub_8045ACC(void);
+s32 GetTeamMemberEntityIndex(Entity *pokemon);
 
 extern u8 gUnknown_202EE70[MAX_TEAM_BODY_SIZE];
 extern u8 gUnknown_202EE76[DUNGEON_MAX_WILD_POKEMON_BODY_SIZE];
diff --git a/include/status_checks.h b/include/status_checks.h
index 22bd90d4a..071fcb388 100644
--- a/include/status_checks.h
+++ b/include/status_checks.h
@@ -3,8 +3,7 @@
 
 #include "structs/dungeon_entity.h"
 
-extern const s16 gConfusedAttackChance;
-
 bool8 HasStatusThatPreventsActing(Entity *pokemon);
+bool8 sub_80701A4(Entity *pokemon);
 
 #endif
diff --git a/include/targeting_flags.h b/include/targeting_flags.h
deleted file mode 100644
index 7960d5c0a..000000000
--- a/include/targeting_flags.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef GUARD_TARGETING_FLAGS_H
-#define GUARD_TARGETING_FLAGS_H
-
-#include "constants/move.h"
-#include "structs/dungeon_entity.h"
-
-s16 GetMoveTargetAndRangeForPokemon(Entity *pokemon, Move *move, bool32 isAI);
-
-#endif
diff --git a/ld_script.ld b/ld_script.ld
index cfdedf3d6..08e8c7451 100755
--- a/ld_script.ld
+++ b/ld_script.ld
@@ -232,7 +232,7 @@ SECTIONS {
         src/dungeon_menu_stairs.o(.text);
         src/dungeon_menu_others.o(.text);
         src/dungeon_menu_recruitment.o(.text);
-        src/code_8066D04.o(.text);
+        src/dungeon_action_handler.o(.text);
         src/dungeon_recruit_release_menu.o(.text);
         src/dungeon_misc.o(.text);
         src/dungeon_mon_spawn.o(.text);
@@ -617,7 +617,7 @@ SECTIONS {
         src/dungeon_menu_stairs.o(.rodata);
         src/dungeon_menu_others.o(.rodata);
         src/dungeon_menu_recruitment.o(.rodata);
-        src/code_8066D04.o(.rodata);
+        src/dungeon_action_handler.o(.rodata);
         src/dungeon_recruit_release_menu.o(.rodata);
         src/dungeon_misc.o(.rodata);
         src/dungeon_mon_spawn.o(.rodata);
diff --git a/src/dungeon_action_execution.c b/src/dungeon_action_execution.c
index 783f5d583..bb3d50d2a 100644
--- a/src/dungeon_action_execution.c
+++ b/src/dungeon_action_execution.c
@@ -5,7 +5,7 @@
 #include "dungeon_move_util.h"
 #include "dungeon_vram.h"
 #include "dungeon_8041AD0.h"
-#include "code_8066D04.h"
+#include "dungeon_action_handler.h"
 #include "dungeon_message.h"
 #include "constants/dungeon_action.h"
 #include "constants/dungeon.h"
@@ -39,32 +39,10 @@
 #include "move_orb_effects_1.h"
 #include "move_orb_effects_3.h"
 #include "dungeon_entity_movement.h"
-
-void sub_8075BA4(Entity *param_1, u8 param_2);
-void nullsub_95(Entity *);
-extern void sub_80671A0(Entity *);
-extern void sub_8067110(Entity *);
-void HandleUseMoveAIAction(Entity *target);
-void sub_8041888(u8 param_1);
-void sub_805EFB4(Entity *, u8);
-void HandlePlaceItemAction(Entity *);
-void HandlePickUpPlayerAction(Entity *);
-void sub_8066E14(Entity * );
-void sub_8066BD4(Entity*);
-void HandleTalkFieldAction(Entity *);
-void HandleUseMovePlayerAction(Entity *);
-void HandleUseOrbAction(Entity *);
-void sub_8067904(Entity *, u32);
-void HandleGiveItemAction(Entity *);
-void HandleTakeItemAction(Entity *);
-void HandleUseItemAction(Entity *);
-void sub_8066FA4(Entity *);
-void HandleUnsetItemAction(Entity *,bool8);
-extern u8 DisplayActions(Entity *);
-void sub_806A1E8(Entity *pokemon);
-void HandlePickUpAIAction(Entity *pokemon);
-void HandleThrowItemAIAction(Entity *pokemon);
-void HandleEatAIAction(Entity *pokemon);
+#include "dungeon_ai_items.h"
+#include "dungeon_ai_attack.h"
+#include "dungeon_ai.h"
+#include "dungeon_main.h"
 
 EWRAM_DATA u8 gUnknown_202F32C = 0;
 EWRAM_DATA u8 gUnknown_202F32D = 0;
diff --git a/src/code_8066D04.c b/src/dungeon_action_handler.c
similarity index 98%
rename from src/code_8066D04.c
rename to src/dungeon_action_handler.c
index b26c4797e..ca19263b2 100644
--- a/src/code_8066D04.c
+++ b/src/dungeon_action_handler.c
@@ -1,5 +1,6 @@
 #include "global.h"
 #include "globaldata.h"
+#include "dungeon_action_handler.h"
 #include "constants/dungeon.h"
 #include "constants/dungeon_exit.h"
 #include "constants/item.h"
@@ -8,7 +9,6 @@
 #include "dungeon_tilemap.h"
 #include "dungeon_8041AD0.h"
 #include "dungeon_action.h"
-#include "code_8066D04.h"
 #include "dungeon_mon_sprite_render.h"
 #include "dungeon_jobs.h"
 #include "run_dungeon.h"
@@ -46,9 +46,9 @@
 #include "warp_target.h"
 #include "move_orb_effects_5.h"
 
-Entity *sub_806773C(Entity *entity);
-void sub_8067558(Entity *entity, Entity *targetEntity, s32 a2);
-void sub_8067794(Entity *entity, Entity *targetEntity, s32 a2);
+static void sub_8067558(Entity *entity, Entity *targetEntity, s32 a2);
+static Entity *sub_806773C(Entity *entity);
+static void sub_8067794(Entity *entity, Entity *targetEntity, s32 a2);
 
 void HandlePickUpPlayerAction(Entity *entity)
 {
@@ -98,7 +98,7 @@ void HandleSetItemAction(Entity *param_1, bool8 param_2)
   }
 }
 
-void HandleUnsetItemAction(Entity *entity,bool8 enableMessage)
+void HandleUnsetItemAction(Entity *entity, bool8 enableMessage)
 {
   Item *item;
   int index;
@@ -596,7 +596,7 @@ void sub_806752C(ActionContainer *a0)
     sub_8067558(GetLeader(), targetEntity, 0);
 }
 
-void sub_8067558(Entity *entity, Entity *targetEntity, s32 a2)
+static void sub_8067558(Entity *entity, Entity *targetEntity, s32 a2)
 {
     EntityInfo *info1 = GetEntInfo(entity);
 
@@ -679,7 +679,7 @@ void sub_8067558(Entity *entity, Entity *targetEntity, s32 a2)
     }
 }
 
-Entity *sub_806773C(Entity *entity)
+static Entity *sub_806773C(Entity *entity)
 {
     Entity *ret = sub_80696A8(entity);
     if (ret == NULL) return NULL;
@@ -695,7 +695,7 @@ void sub_8067768(ActionContainer *a0)
     sub_8067794(GetLeader(), targetEntity, 0);
 }
 
-void sub_8067794(Entity *entity, Entity *targetEntity, s32 a2)
+static void sub_8067794(Entity *entity, Entity *targetEntity, s32 a2)
 {
     const u8 *stringPtr1;
     const u8 *stringPtr2;
diff --git a/src/dungeon_ai_attack.c b/src/dungeon_ai_attack.c
index 3dc426d77..0b48ce4c1 100644
--- a/src/dungeon_ai_attack.c
+++ b/src/dungeon_ai_attack.c
@@ -27,7 +27,6 @@
 #include "position_util.h"
 #include "status_checks.h"
 #include "structs/str_dungeon.h"
-#include "targeting_flags.h"
 #include "dungeon_misc.h"
 #include "dungeon_pos_data.h"
 #include "dungeon_engine.h"
@@ -45,8 +44,6 @@ EWRAM_DATA u8 gPotentialAttackTargetDirections[NUM_DIRECTIONS] = {0};
 EWRAM_DATA s32 gPotentialAttackTargetWeights[NUM_DIRECTIONS] = {0};
 EWRAM_DATA Entity *gPotentialTargets[NUM_DIRECTIONS] = {0};
 
-extern void sub_806A1B0(Entity *);
-
 void ChooseAIMove(Entity *pokemon)
 {
     EntityInfo *pokemonInfo = GetEntInfo(pokemon);
diff --git a/src/dungeon_ai_items.c b/src/dungeon_ai_items.c
index a09671db2..f7a002344 100644
--- a/src/dungeon_ai_items.c
+++ b/src/dungeon_ai_items.c
@@ -25,9 +25,7 @@
 #include "dungeon_items.h"
 #include "constants/dungeon.h"
 #include "dungeon_engine.h"
-
-extern void sub_8067110(Entity *);
-extern void sub_80671A0(Entity *);
+#include "dungeon_action_handler.h"
 
 #define NUM_POTENTIAL_ROCK_TARGETS 20
 #define GROUND_ITEM_TOOLBOX_INDEX 0x80
@@ -45,10 +43,6 @@ EWRAM_DATA u32 gAIThrownItemDirections[NUM_DIRECTIONS] = {0};
 EWRAM_DATA bool8 gAIThrownItemDirectionIsUsed[NUM_DIRECTIONS] = {0};
 EWRAM_DATA u32 gAIThrownItemProbabilities[NUM_DIRECTIONS] = {0};
 
-extern TeamInventory *gTeamInventoryRef;
-
-void sub_8073D14(Entity *);
-
 void AIDecideUseItem(Entity *pokemon)
 {
     EntityInfo *pokemonInfo = GetEntInfo(pokemon);
@@ -429,10 +423,10 @@ void HandleThrowItemAIAction(Entity *pokemon)
 
 void HandlePickUpAIAction(Entity *pokemon)
 {
-    sub_8073D14(pokemon);
+    MonTryPickUpItem(pokemon);
 }
 
-void sub_8073D14(Entity *entity)
+void MonTryPickUpItem(Entity *entity)
 {
     Item *groundItem;
     EntityInfo *_entityInfo;
diff --git a/src/dungeon_cutscene_articuno.c b/src/dungeon_cutscene_articuno.c
index 15457e540..2777bf5bb 100644
--- a/src/dungeon_cutscene_articuno.c
+++ b/src/dungeon_cutscene_articuno.c
@@ -32,9 +32,6 @@
 #include "dungeon_leveling.h"
 #include "weather.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void sub_8088484(Entity *param_1);
 static void ArticunoScreenFlash(void);
diff --git a/src/dungeon_cutscene_celebi.c b/src/dungeon_cutscene_celebi.c
index e42c9fb75..ae939d673 100644
--- a/src/dungeon_cutscene_celebi.c
+++ b/src/dungeon_cutscene_celebi.c
@@ -33,9 +33,6 @@
 #include "weather.h"
 #include "dungeon_mon_recruit.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void sub_808C8E0(Entity *entity);
 static void sub_808C9B0(Entity *param_1);
diff --git a/src/dungeon_cutscene_deoxys.c b/src/dungeon_cutscene_deoxys.c
index 0c4f9aec0..9a991f3c5 100644
--- a/src/dungeon_cutscene_deoxys.c
+++ b/src/dungeon_cutscene_deoxys.c
@@ -31,9 +31,6 @@
 #include "dungeon_boss_dialogue.h"
 
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void DeoxysScreenFlash(void);
 static void sub_808C550(void);
diff --git a/src/dungeon_cutscene_entei.c b/src/dungeon_cutscene_entei.c
index 7319d4832..c71550c82 100644
--- a/src/dungeon_cutscene_entei.c
+++ b/src/dungeon_cutscene_entei.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void EnteiScreenFlash(void);
 
diff --git a/src/dungeon_cutscene_groudon.c b/src/dungeon_cutscene_groudon.c
index d9dbaad8c..c55bc85b9 100644
--- a/src/dungeon_cutscene_groudon.c
+++ b/src/dungeon_cutscene_groudon.c
@@ -32,9 +32,6 @@
 #include "dungeon_tilemap.h"
 #include "dungeon_leveling.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void SceneGroudonMovement(Entity * groudonEntity);
 static void GroudonScreenFlash(void);
diff --git a/src/dungeon_cutscene_hooh.c b/src/dungeon_cutscene_hooh.c
index 1a590bf58..48319bdde 100644
--- a/src/dungeon_cutscene_hooh.c
+++ b/src/dungeon_cutscene_hooh.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void HoOhDropInEffect(Entity * param_1);
 static void HoOhScreenFlash(void);
diff --git a/src/dungeon_cutscene_jirachi.c b/src/dungeon_cutscene_jirachi.c
index 9c3d5635a..98193a369 100644
--- a/src/dungeon_cutscene_jirachi.c
+++ b/src/dungeon_cutscene_jirachi.c
@@ -34,9 +34,6 @@
 #include "dungeon_mon_spawn.h"
 #include "dungeon_8041AD0.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void sub_808B50C(void);
 static void JirachiWish(void);
diff --git a/src/dungeon_cutscene_kyogre.c b/src/dungeon_cutscene_kyogre.c
index 6c7a1803e..18c5e8be9 100644
--- a/src/dungeon_cutscene_kyogre.c
+++ b/src/dungeon_cutscene_kyogre.c
@@ -32,9 +32,6 @@
 #include "dungeon_tilemap.h"
 #include "dungeon_map.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void nullsub_99(void);
 static void KyogreScreenFlash(void);
diff --git a/src/dungeon_cutscene_latios.c b/src/dungeon_cutscene_latios.c
index efd61c979..5136c8263 100644
--- a/src/dungeon_cutscene_latios.c
+++ b/src/dungeon_cutscene_latios.c
@@ -31,9 +31,6 @@
 #include "dungeon_boss_dialogue.h"
 
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void LatiosScreenFlash(void);
 
diff --git a/src/dungeon_cutscene_lugia.c b/src/dungeon_cutscene_lugia.c
index cdf7e36d7..f34abfa65 100644
--- a/src/dungeon_cutscene_lugia.c
+++ b/src/dungeon_cutscene_lugia.c
@@ -31,9 +31,6 @@
 #include "dungeon_boss_dialogue.h"
 
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void LugiaScreenFlash(void);
 static void LugiaScreenFlash2(void);
diff --git a/src/dungeon_cutscene_magma_cavern.c b/src/dungeon_cutscene_magma_cavern.c
index abb7ec563..143a007d8 100644
--- a/src/dungeon_cutscene_magma_cavern.c
+++ b/src/dungeon_cutscene_magma_cavern.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void sub_80891F0(void);
 static void sub_8089294(void);
diff --git a/src/dungeon_cutscene_mankey.c b/src/dungeon_cutscene_mankey.c
index 066949a58..5960cfe8f 100644
--- a/src/dungeon_cutscene_mankey.c
+++ b/src/dungeon_cutscene_mankey.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void sub_80898F8(Entity *r0);
 static void sub_8089908(Entity *r0);
diff --git a/src/dungeon_cutscene_meanies.c b/src/dungeon_cutscene_meanies.c
index 16423a3ea..180d18910 100644
--- a/src/dungeon_cutscene_meanies.c
+++ b/src/dungeon_cutscene_meanies.c
@@ -29,9 +29,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void sub_8087144(void);
 
diff --git a/src/dungeon_cutscene_medicham.c b/src/dungeon_cutscene_medicham.c
index 2949d3b9c..3909a66b9 100644
--- a/src/dungeon_cutscene_medicham.c
+++ b/src/dungeon_cutscene_medicham.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 void sub_808C9C4(void)
 {
diff --git a/src/dungeon_cutscene_mewtwo.c b/src/dungeon_cutscene_mewtwo.c
index 833f0d33c..df90972ac 100644
--- a/src/dungeon_cutscene_mewtwo.c
+++ b/src/dungeon_cutscene_mewtwo.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void MewtwoDropInEffect(Entity *mewtwoEntity);
 static void MewtwoScreenFlash(void);
diff --git a/src/dungeon_cutscene_moltres.c b/src/dungeon_cutscene_moltres.c
index 8e8133c24..d1064d6e6 100644
--- a/src/dungeon_cutscene_moltres.c
+++ b/src/dungeon_cutscene_moltres.c
@@ -32,9 +32,6 @@
 #include "dungeon_tilemap.h"
 #include "dungeon_leveling.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void MoltresDropInEffect(Entity * moltresEntity);
 static void MoltresScreenFlash1(s32 xArg, s32 yArg);
diff --git a/src/dungeon_cutscene_raikou.c b/src/dungeon_cutscene_raikou.c
index 95b30d259..497828fe7 100644
--- a/src/dungeon_cutscene_raikou.c
+++ b/src/dungeon_cutscene_raikou.c
@@ -31,9 +31,6 @@
 #include "dungeon_boss_dialogue.h"
 #include "weather.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void RaikouScreenFlash(void);
 
diff --git a/src/dungeon_cutscene_rayquaza.c b/src/dungeon_cutscene_rayquaza.c
index 7d98bbd52..17717c4a6 100644
--- a/src/dungeon_cutscene_rayquaza.c
+++ b/src/dungeon_cutscene_rayquaza.c
@@ -31,9 +31,6 @@
 #include "dungeon_boss_dialogue.h"
 #include "dungeon_leveling.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void RayquazaDropInEffect(Entity *rayquazaEntity);
 static void RayquazaScreenFlash(void);
diff --git a/src/dungeon_cutscene_regis.c b/src/dungeon_cutscene_regis.c
index 1aff0cf65..8040ea9f5 100644
--- a/src/dungeon_cutscene_regis.c
+++ b/src/dungeon_cutscene_regis.c
@@ -31,9 +31,6 @@
 #include "dungeon_boss_dialogue.h"
 #include "dungeon_map.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void sub_808B1CC(u8 itemID);
 static void SetupRegiFacingDirection(Entity *regiEntity);
diff --git a/src/dungeon_cutscene_skarmory.c b/src/dungeon_cutscene_skarmory.c
index 3cf446119..dfbaf6d50 100644
--- a/src/dungeon_cutscene_skarmory.c
+++ b/src/dungeon_cutscene_skarmory.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void SkarmoryEntry(Entity * skarmoryEntity);
 
diff --git a/src/dungeon_cutscene_smeargle.c b/src/dungeon_cutscene_smeargle.c
index 707f74367..04d98233f 100644
--- a/src/dungeon_cutscene_smeargle.c
+++ b/src/dungeon_cutscene_smeargle.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 void DummyFightDialogue(void)
 {
diff --git a/src/dungeon_cutscene_suicune.c b/src/dungeon_cutscene_suicune.c
index 1931c8c97..412128ace 100644
--- a/src/dungeon_cutscene_suicune.c
+++ b/src/dungeon_cutscene_suicune.c
@@ -30,9 +30,6 @@
 #include "dungeon_config.h"
 #include "dungeon_boss_dialogue.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 static void sub_808A528(Entity * param_1);
 static void SuicuneScreenFlash(void);
diff --git a/src/dungeon_cutscene_zapdos.c b/src/dungeon_cutscene_zapdos.c
index 9f4d87768..d37942aa8 100644
--- a/src/dungeon_cutscene_zapdos.c
+++ b/src/dungeon_cutscene_zapdos.c
@@ -31,9 +31,6 @@
 #include "dungeon_boss_dialogue.h"
 #include "dungeon_leveling.h"
 
-extern void sub_8049884(void);
-extern void sub_8049B8C(void);
-extern void sub_8052D44(s16 *, Entity *, Entity *);
 
 struct Zapdos1
 {
diff --git a/src/dungeon_damage.c b/src/dungeon_damage.c
index e18f29ae7..901e65496 100644
--- a/src/dungeon_damage.c
+++ b/src/dungeon_damage.c
@@ -47,13 +47,8 @@
 #include "move_orb_actions_1.h"
 #include "move_orb_effects_2.h"
 #include "move_orb_effects_5.h"
-
-extern void sub_803ED30(s32, Entity *r0, u8, s32);
-extern bool8 sub_806A458(Entity *);
-extern bool8 sub_806A58C(s16 a0);
-extern void sub_806A390(Entity *r0);
-extern void sub_800DBBC(void);
-extern void PointCameraToMonster(Entity *);
+#include "dungeon_tilemap.h"
+#include "effect_main.h"
 
 static bool8 HandleDealingDamageInternal(Entity *attacker, Entity *target, struct DamageStruct *r5, bool32 isFalseSwipe, bool32 giveExp, s16 dungeonExitReason_, s32 arg8);
 static bool8 sub_806E100(s48_16 *param_1, Entity *pokemon, Entity *target, u8 type, DamageStruct *dmgStruct);
diff --git a/src/dungeon_engine.c b/src/dungeon_engine.c
index 2ea014d0c..ad5c4024f 100644
--- a/src/dungeon_engine.c
+++ b/src/dungeon_engine.c
@@ -23,8 +23,6 @@
 #include "dungeon_entity_movement.h"
 #include "dungeon_wind.h"
 
-extern void sub_805F02C(void);
-
 static void sub_8044454(void);
 static bool8 RunLeaderTurn(bool8);
 static void sub_8044574(void);
diff --git a/src/dungeon_entity_movement.c b/src/dungeon_entity_movement.c
index cda0ccb77..a02a6941d 100644
--- a/src/dungeon_entity_movement.c
+++ b/src/dungeon_entity_movement.c
@@ -53,6 +53,7 @@
 #include "dungeon_tilemap.h"
 #include "run_dungeon.h"
 #include "dungeon_8041AD0.h"
+#include "dungeon_ai_items.h"
 
 static EWRAM_DATA s32 sSpeedMultiplier = 0;
 
@@ -60,8 +61,6 @@ static void sub_8075050(EntityInfo *info, Unk_Entity_x184 *strPtr);
 static void nullsub_97(Entity *entity);
 static void TryInteractWithTile(Entity *entity);
 
-extern void sub_8073D14(Entity *entity);
-
 static inline void SetSpeedMultiplier(void)
 {
     if (gGameOptionsRef->dungeonSpeed != 0)
@@ -392,7 +391,7 @@ static void TryInteractWithTile(Entity *entity)
             break;
         }
         case ENTITY_ITEM:
-            sub_8073D14(entity);
+            MonTryPickUpItem(entity);
             break;
         case ENTITY_NOTHING:
         case ENTITY_MONSTER:
diff --git a/src/dungeon_generation.c b/src/dungeon_generation.c
index 750e3dc01..bf247b6f9 100644
--- a/src/dungeon_generation.c
+++ b/src/dungeon_generation.c
@@ -22,11 +22,6 @@
 #include "dungeon_mon_spawn.h"
 #include "run_dungeon.h"
 
-extern s32 sub_803DA20(s16 species);
-extern void sub_8049840(void);
-extern void sub_80498A8(s32, s32);
-extern void sub_8049B8C(void);
-
 enum CardinalDirection
 {
 	CARDINAL_DIR_RIGHT,
diff --git a/src/dungeon_leveling.c b/src/dungeon_leveling.c
index 359cda84f..304bffda6 100644
--- a/src/dungeon_leveling.c
+++ b/src/dungeon_leveling.c
@@ -32,8 +32,6 @@
 static EWRAM_DATA s32 sNewAtkStats[2] = {0, 0};
 static EWRAM_DATA s32 sNewDefStats[2] = {0, 0};
 
-void sub_8042A44(Entity *r0);
-
 static const u8 gUnknown_8107010[8] = {0, 1, 1, 2, 1, 1, 0, 0};
 static const u8 * const gUnknown_8107018[3] = {
     _(""),
diff --git a/src/dungeon_main.c b/src/dungeon_main.c
index 2c545c364..22034d0c7 100644
--- a/src/dungeon_main.c
+++ b/src/dungeon_main.c
@@ -18,7 +18,7 @@
 #include "dungeon_vram.h"
 #include "dungeon_tilemap.h"
 #include "dungeon_action.h"
-#include "code_8066D04.h"
+#include "dungeon_action_handler.h"
 #include "dungeon_mon_sprite_render.h"
 #include "dungeon_action.h"
 #include "dungeon_ai_movement.h"
@@ -61,21 +61,9 @@
 #include "dungeon_strings.h"
 #include "dungeon_entity_movement.h"
 #include "dungeon_8041AD0.h"
+#include "status_checks.h"
 
-extern void HandleUnsetItemAction(Entity *,bool8);
-extern void TryTriggerTrap(Entity *pokemon, DungeonPos *pos, int param_3, char param_4);
-void TryPointCameraToMonster(Entity *a0, u8 a1);
-bool8 sub_80701A4(Entity *a0);
-void ClearUnpaidFlagFromAllItems(void);
-void sub_806A914(u8 a0, u8 a1, u8 a2);
-u16 GetLeaderActionId(void);
 void sub_80978C8(s16 a0);
-void HandleTalkFieldAction(Entity *);
-s32 GetTeamMemberEntityIndex(Entity *pokemon);
-bool8 sub_8070F80(Entity * pokemon, s32 direction);
-void sub_806752C(ActionContainer *a0);
-void sub_8067768(ActionContainer *a0);
-extern bool8 sub_8071A8C(Entity *pokemon);
 
 static EWRAM_DATA bool8 sInDiagonalMode = 0;
 static EWRAM_DATA bool8 sInRotateMode = 0;
diff --git a/src/dungeon_map.c b/src/dungeon_map.c
index b712dbdaa..a99f45c2c 100644
--- a/src/dungeon_map.c
+++ b/src/dungeon_map.c
@@ -23,8 +23,6 @@
 #include "trap.h"
 #include "run_dungeon.h"
 
-extern bool8 ShouldMinimapDisplayEntity(Entity *ent);
-
 struct UnkStruct1
 {
     u32 **unk0;
diff --git a/src/dungeon_menu_moves.c b/src/dungeon_menu_moves.c
index 3a6a078fa..ae251cf4d 100644
--- a/src/dungeon_menu_moves.c
+++ b/src/dungeon_menu_moves.c
@@ -30,13 +30,6 @@
 #include "text_2.h"
 #include "text_3.h"
 
-extern s32 GetTeamMemberEntityIndex(Entity *pokemon);
-extern void sub_806752C(ActionContainer *a0);
-extern void ShowDungeonSummaryOrIQMenu(ActionContainer *a0, bool8 a1);
-extern void sub_8067768(ActionContainer *a0);
-extern bool8 sub_8071A8C(Entity *pokemon);
-
-
 static void ShowMovesMenuWindows(Entity *entity, EntityInfo *entInfo, bool8 redColorForChargingMoves, WindowTemplates *windows, WindowHeader *header, u8 *arg5, s32 arg6, s32 arg7);
 static void AddMovesSubMenuOptions(Entity *entity, bool8 addLinkOptions, bool8 addUseMove);
 static void SetSubMenuOptionAction(ActionContainer *a0, s32 a1, s32 a2);
diff --git a/src/dungeon_menu_others.c b/src/dungeon_menu_others.c
index 488ec37c8..bb100322c 100644
--- a/src/dungeon_menu_others.c
+++ b/src/dungeon_menu_others.c
@@ -32,10 +32,6 @@
 #include "text_3.h"
 #include "run_dungeon.h"
 
-extern bool8 IsFloorwideFixedRoom(void);
-extern u16 GetLeaderActionId(void);
-
-
 static void PrintOthersMenuOptions(void);
 static void ShowGameOptionsMenu(void);
 static void ShowQuickSaveGiveUpMenu(void);
diff --git a/src/dungeon_misc.c b/src/dungeon_misc.c
index 90742c275..0645fdc78 100644
--- a/src/dungeon_misc.c
+++ b/src/dungeon_misc.c
@@ -55,24 +55,10 @@
 #include "move_orb_effects_5.h"
 #include "dungeon_recruit_release_menu.h"
 #include "dungeon_8041AD0.h"
+#include "dungeon_pokemon_sprites.h"
 
 static void EnsureCastformLoaded(void);
 static void EnsureDeoxysLoaded(void);
-
-extern bool8 sub_806A58C(s16 r0);
-extern bool8 sub_8070F80(Entity * pokemon, s32 direction);
-extern s32 sub_806A4DC(EntityInfo *info);
-extern s16 sub_803D970(u32);
-extern bool8 sub_80860A8(u8 id);
-extern u8 sub_803D73C(s32 a0);
-extern void DeletePokemonDungeonSprite(s32 id);
-extern s32 sub_803DA20(s32 param_1);
-extern Entity *sub_804550C(s16 a);
-extern Entity *sub_80453AC(s16 id);
-
-extern u8 gUnknown_202F32C;
-
-bool8 sub_806A564(s16 r0);
 static bool8 sub_806A5A4(s16 r0);
 
 void OpenDungeonPaletteFile(void)
@@ -1282,7 +1268,7 @@ void TryPointCameraToMonster(Entity *pokemon, u8 param_2)
   }
 }
 
-void nullsub_95(void)
+void nullsub_95(Entity *pokemon)
 {}
 
 void ReevaluateSnatchMonster(void)
@@ -1512,8 +1498,6 @@ void sub_806A6E8(Entity *entity)
     }
 }
 
-void DisplayMsgIfNewIqSkillLearned(EntityInfo *info, s32 pokeIq);
-
 UNUSED static void DisplayMsgIfTeamMonsLearnedNewIqSkill(void)
 {
     s32 i;
diff --git a/src/dungeon_mon_spawn.c b/src/dungeon_mon_spawn.c
index 2308e5e07..113bc0baf 100644
--- a/src/dungeon_mon_spawn.c
+++ b/src/dungeon_mon_spawn.c
@@ -37,11 +37,8 @@
 #include "dungeon_engine.h"
 #include "dungeon_leveling.h"
 #include "dungeon_8041AD0.h"
-
-extern bool8 sub_80860A8(u8 id);
-extern u8 gUnknown_202F32C;
-extern Entity *sub_804550C(s16 a);
-extern Entity *sub_80453AC(s16 id);
+#include "dungeon_cutscene.h"
+#include "dungeon_action_execution.h"
 
 static s32 CalcSpeciesHPAtLevel(s32 species, s32 level);
 static s32 CalcSpeciesAtkAtLevel(s32 species, s32 level, s32 categoryIndex);
diff --git a/src/dungeon_move.c b/src/dungeon_move.c
index e1cb56fc0..decdf3a18 100644
--- a/src/dungeon_move.c
+++ b/src/dungeon_move.c
@@ -38,19 +38,12 @@
 #include "position_util.h"
 #include "sprite.h"
 #include "weather.h"
-#include "targeting_flags.h"
 #include "text_util.h"
 #include "dungeon_pos_data.h"
 #include "dungeon_engine.h"
 #include "warp_target.h"
+#include "dungeon_ai_attack.h"
 
-extern s16 GetDungeonExitReasonFromMoveOrItem(Move *move, s32 itemID);
-extern void sub_806A1E8(Entity *pokemon);
-extern bool8 sub_8040BB0(Entity *entity, Move *move, bool8);
-extern void sub_8040DA0(Entity *entity, Move *move);
-extern u16 GetEffectiveMoveId(u16 moveId, u8 weather, u8 hasSpecialEffect);
-extern void sub_800EF10(u16 r0);
-extern void sub_800E3AC(s32 a0, DungeonPos *pos, s32 a2);
 extern void sub_8041168(Entity *entity, Entity *entity2, Move *,DungeonPos *);
 
 static s32 TryHitTarget(Entity *attacker, Entity *target, Move *move, struct DamageStruct *dmgStruct, s16 unk_);
diff --git a/src/dungeon_move_util.c b/src/dungeon_move_util.c
index 36d9f37eb..9f342f2de 100644
--- a/src/dungeon_move_util.c
+++ b/src/dungeon_move_util.c
@@ -36,7 +36,7 @@
 #include "move_orb_effects_3.h"
 #include "move_orb_effects_5.h"
 #include "weather.h"
-#include "targeting_flags.h"
+#include "dungeon_ai_attack.h"
 #include "pokemon_types.h"
 #include "dungeon_run_end.h"
 #include "dungeon_pos_data.h"
@@ -44,12 +44,9 @@
 #include "dungeon_damage.h"
 #include "dungeon_leveling.h"
 
-extern void sub_806A1E8(Entity *pokemon);
 extern bool8 sub_8040BB0(Entity *entity, Move *move, bool8);
 extern void sub_8040DA0(Entity *entity, Move *move);
 extern u16 GetEffectiveMoveId(u16 moveId, u8 weather, u8 hasSpecialEffect);
-extern void sub_800EF10(u16 r0);
-extern void sub_800E3AC(s32 a0, DungeonPos *pos, s32 a2);
 extern void sub_8041168(Entity *entity, Entity *entity2, Move *,DungeonPos *);
 
 static u8 ToItemID(u32 itemID);
diff --git a/src/dungeon_recruit_release_menu.c b/src/dungeon_recruit_release_menu.c
index ff7e93141..aa6de89d4 100644
--- a/src/dungeon_recruit_release_menu.c
+++ b/src/dungeon_recruit_release_menu.c
@@ -7,7 +7,6 @@
 #include "dungeon_tilemap.h"
 #include "dungeon_8041AD0.h"
 #include "dungeon_action.h"
-#include "code_8066D04.h"
 #include "dungeon_mon_sprite_render.h"
 #include "run_dungeon.h"
 #include "dungeon_items.h"
diff --git a/src/dungeon_turn_effects.c b/src/dungeon_turn_effects.c
index 05aa73222..8acbab2f6 100644
--- a/src/dungeon_turn_effects.c
+++ b/src/dungeon_turn_effects.c
@@ -42,9 +42,7 @@
 #include "move_orb_effects_5.h"
 #include "dungeon_8041AD0.h"
 #include "dungeon_entity_movement.h"
-
-extern void sub_805229C(void);
-extern void sub_805E804(void);
+#include "dungeon_main.h"
 
 void ApplyEndOfTurnEffects(Entity *entity)
 {
diff --git a/src/dungeon_vram.c b/src/dungeon_vram.c
index e4677629c..54dcaa10e 100644
--- a/src/dungeon_vram.c
+++ b/src/dungeon_vram.c
@@ -33,6 +33,8 @@
 #include "dungeon_engine.h"
 #include "dungeon_cutscene.h"
 #include "effect_main.h"
+#include "dungeon_mon_sprite_render.h"
+#include "dungeon_8041AD0.h"
 
 // File split is correct. This technical file deals with windows, advancing frames(v-blanks) and vram / pal set-up.
 
@@ -47,10 +49,6 @@ extern struct DungeonPalFile *gUnknown_202EC94;
 extern RGB gUnknown_202ECA4[];
 extern OpenedFile *gUnknown_202EC9C;
 
-void sub_806CC10();
-void sub_804522C();
-void sub_8042E5C();
-
 static void sub_803E490(u32);
 static void sub_803EC94(void);
 static void sub_803ECE0(void);
diff --git a/src/friend_rescue.c b/src/friend_rescue.c
index 9750c5134..7e53bc290 100644
--- a/src/friend_rescue.c
+++ b/src/friend_rescue.c
@@ -31,9 +31,6 @@
 
 extern void SetFriendRescueMenuState(u32);
 
-extern TeamInventory *gTeamInventoryRef;
-
-
 // NOTE: MenuItems and WindowTemplate defined in here..
 #include "data/friend_rescue_menus.h"
 
diff --git a/src/ground_link.c b/src/ground_link.c
index 7189454ac..6c9667914 100644
--- a/src/ground_link.c
+++ b/src/ground_link.c
@@ -3,38 +3,37 @@
 #include "ground_link.h"
 #include "debug.h"
 #include "ground_script.h"
+#include "ground_script_file.h"
 #include "number_util.h"
 
-EWRAM_INIT const struct GroundLink *gCurrentGroundLink = NULL;
-extern DebugLocation gUnknown_8118798;
-extern const struct GroundScriptHeader *GetGroundScript(s16 r0, DebugLocation *r1);
+EWRAM_INIT static const struct GroundLink *sCurrentGroundLink = NULL;
 
-void sub_80AD868(void)
+UNUSED static void sub_80AD868(void)
 {
-    gCurrentGroundLink = NULL;
+    sCurrentGroundLink = NULL;
 }
 
-void sub_80AD874(void)
+UNUSED static void sub_80AD874(void)
 {
-    gCurrentGroundLink = NULL;
+    sCurrentGroundLink = NULL;
 }
 
 void GroundLink_Select(s16 r0)
 {
     const struct GroundScriptHeader *gs = GetGroundScript(r0, DEBUG_LOC_PTR("../ground/ground_link.c", 77, "GroundLink_Select"));
-    gCurrentGroundLink = gs->links;
+    sCurrentGroundLink = gs->links;
 }
 
-const struct GroundLink *GetCurrentGroundLink(s16 r0)
+UNUSED static const struct GroundLink *GetCurrentGroundLink(s16 r0)
 {
     u32 a = r0;
-    return &gCurrentGroundLink[a];
+    return &sCurrentGroundLink[a];
 }
 
 s32 GroundLink_GetPos(s32 _arg0, PixelPos *pos)
 {
     s32 arg0 = (s16)(_arg0);
-    const struct GroundLink *ptr = &gCurrentGroundLink[arg0];
+    const struct GroundLink *ptr = &sCurrentGroundLink[arg0];
 
     SetUnkInGroundEvent(&ptr->pos, pos);
 
@@ -44,7 +43,7 @@ s32 GroundLink_GetPos(s32 _arg0, PixelPos *pos)
 s32 GroundLink_GetArea(s32 _arg0, PixelPos *arg1, PixelPos *arg2, PixelPos *arg3)
 {
     s32 arg0 = (s16) _arg0;
-    const struct GroundLink *ptr = &gCurrentGroundLink[arg0];
+    const struct GroundLink *ptr = &sCurrentGroundLink[arg0];
 
     *arg1 = *arg3;
 
diff --git a/src/ground_main.c b/src/ground_main.c
index bcf6247c8..031e15197 100644
--- a/src/ground_main.c
+++ b/src/ground_main.c
@@ -71,7 +71,6 @@ extern void sub_809975C(void);
 extern void sub_8099BE4(void);
 extern void sub_8099744(void);
 extern void WaitForNextFrameAndAdvanceRNG(void);
-extern void LoadBufferedInputs(void);
 extern void sub_8099750(void);
 extern void nullsub_16(void);
 extern void UpdateAdventureAchievements(void);
diff --git a/src/run_dungeon.c b/src/run_dungeon.c
index 96ecec69b..3ebf50053 100644
--- a/src/run_dungeon.c
+++ b/src/run_dungeon.c
@@ -61,6 +61,7 @@
 #include "dungeon_action_execution.h"
 #include "dungeon_8041AD0.h"
 #include "ground_main.h"
+#include "dungeon_mon_sprite_render.h"
 
 EWRAM_INIT struct UnkStruct_203B414 *gUnknown_203B414 = NULL;
 EWRAM_INIT Dungeon *gDungeon = NULL;
@@ -68,7 +69,6 @@ static EWRAM_INIT u8 *gSerializedData_203B41C = NULL;
 
 extern void sub_8068BDC(u8 r0);
 extern void sub_803D4AC(void);
-extern void sub_804513C(void);
 extern void sub_8068F28(void);
 extern void IncrementThievingSuccesses(void);
 extern void sub_8043D60(void);
@@ -84,16 +84,9 @@ extern void ReevaluateSnatchMonster(void);
 extern void sub_8051E3C(void);
 extern void sub_807FA18(void);
 extern void sub_806A974(void);
-extern void DetermineAllMonsterShadow(void);
 extern void sub_8068F80(void);
-extern bool8 TryForcedLoss(bool8);
 extern void sub_806A914(bool8 a0, bool8 a1, bool8 showRunAwayEffect);
 
-extern u8 gUnknown_202F1A8;
-
-void EnforceMaxItemsAndMoney(void);
-static void sub_8043FD0(void);
-
 extern OpenedFile *gDungeonNameBannerPalette;
 
 // These functions are not part of dungeon's overlay5 and connect, in a way, overworld with dungeon.
@@ -101,6 +94,7 @@ extern OpenedFile *gDungeonNameBannerPalette;
 static const s16 sDeoxysForms[4] = {MONSTER_DEOXYS_NORMAL, MONSTER_DEOXYS_ATTACK, MONSTER_DEOXYS_DEFENSE, MONSTER_DEOXYS_SPEED};
 
 static void sub_8043CD8(void);
+static void sub_8043FD0(void);
 
 // Actual function in Sky. Macro instead of static inline for matching
 #define GetForcedLossReason()(gDungeon->unk10)
diff --git a/src/trap.c b/src/trap.c
index 549588545..120bdfe23 100644
--- a/src/trap.c
+++ b/src/trap.c
@@ -39,9 +39,6 @@
 #include "move_orb_effects_2.h"
 #include "move_orb_effects_4.h"
 
-void sub_806A1E8(Entity *pokemon);
-Entity *sub_8045684(u8, DungeonPos *, u8);
-
 void sub_807FA18(void)
 {
     s32 x, y;
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 8ea49be54..283f7c7de 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -49,7 +49,6 @@
 	.space 4
     .include "src/dungeon_menu_others.o"
     .include "src/dungeon_menu_recruitment.o"
-    .include "src/code_8066D04.o"
     .include "src/dungeon_recruit_release_menu.o"
     .include "src/dungeon_logic.o"
     .include "src/dungeon_leveling.o"