diff --git a/include/battle.h b/include/battle.h
index ba3752717a..15b37d62c8 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -13,6 +13,7 @@
 #include "battle_util2.h"
 #include "battle_bg.h"
 #include "pokeball.h"
+#include "main.h"
 #include "battle_debug.h"
 #include "battle_dynamax.h"
 #include "battle_terastal.h"
@@ -1118,7 +1119,7 @@ extern u16 gBattleTurnCounter;
 extern u8 gBattlerAbility;
 extern struct QueuedStatBoost gQueuedStatBoosts[MAX_BATTLERS_COUNT];
 
-extern void (*gPreBattleCallback1)(void);
+extern MainCallback gPreBattleCallback1;
 extern void (*gBattleMainFunc)(void);
 extern struct BattleResults gBattleResults;
 extern u8 gLeveledUpInBattle;
diff --git a/include/battle_pyramid_bag.h b/include/battle_pyramid_bag.h
index 258ca56b21..0caf8d302c 100644
--- a/include/battle_pyramid_bag.h
+++ b/include/battle_pyramid_bag.h
@@ -2,6 +2,7 @@
 #define GUARD_BATTLE_PYRAMID_BAG_H
 
 #include "list_menu.h"
+#include "main.h"
 
 enum {
     PYRAMIDBAG_LOC_FIELD,
@@ -29,7 +30,7 @@ enum {
 
 struct PyramidBagMenu
 {
-    void (*newScreenCallback)(void);
+    MainCallback newScreenCallback;
     u8 tilemapBuffer[BG_SCREEN_SIZE];
     u8 spriteIds[PBAG_SPRITE_COUNT];
     u8 windowIds[5];
@@ -49,7 +50,7 @@ struct PyramidBagMenu
 
 struct PyramidBagMenuState
 {
-    void (*exitCallback)(void);
+    MainCallback exitCallback;
     u8 location;
     u16 cursorPosition;
     u16 scrollPosition;
@@ -63,7 +64,7 @@ void CB2_PyramidBagMenuFromStartMenu(void);
 void CB2_ReturnToPyramidBagMenu(void);
 void UpdatePyramidBagList(void);
 void UpdatePyramidBagCursorPos(void);
-void GoToBattlePyramidBagMenu(u8 location, void (*exitCallback)(void));
+void GoToBattlePyramidBagMenu(u8 location, MainCallback exitCallback);
 void Task_CloseBattlePyramidBagMessage(u8 taskId);
 void TryStoreHeldItemsInPyramidBag(void);
 void ChooseItemsToTossFromPyramidBag(void);
diff --git a/include/dodrio_berry_picking.h b/include/dodrio_berry_picking.h
index a93fb27cd1..ec62e51947 100644
--- a/include/dodrio_berry_picking.h
+++ b/include/dodrio_berry_picking.h
@@ -1,7 +1,9 @@
 #ifndef GUARD_DODRIO_BERRY_PICKING_H
 #define GUARD_DODRIO_BERRY_PICKING_H
 
-void StartDodrioBerryPicking(u16 partyId, void (*exitCallback)(void));
+#include "main.h"
+
+void StartDodrioBerryPicking(u16 partyId, MainCallback exitCallback);
 void IsDodrioInParty(void);
 void ShowDodrioBerryPickingRecords(void);
 
diff --git a/include/item_menu.h b/include/item_menu.h
index 64d9f7628e..70245f1faa 100644
--- a/include/item_menu.h
+++ b/include/item_menu.h
@@ -2,6 +2,7 @@
 #define GUARD_ITEM_MENU_H
 
 #include "item.h"
+#include "main.h"
 #include "menu_helpers.h"
 
 enum {
@@ -57,7 +58,7 @@ enum {
 
 struct BagPosition
 {
-    void (*exitCallback)(void);
+    MainCallback exitCallback;
     u8 location;
     u8 pocket;
     u16 pocketSwitchArrowPos;
@@ -69,7 +70,7 @@ extern struct BagPosition gBagPosition;
 
 struct BagMenu
 {
-    void (*newScreenCallback)(void);
+    MainCallback newScreenCallback;
     u8 tilemapBuffer[BG_SCREEN_SIZE];
     u8 spriteIds[ITEMMENUSPRITE_COUNT];
     u8 windowIds[ITEMWIN_COUNT];
@@ -106,10 +107,10 @@ void CB2_BagMenuFromStartMenu(void);
 u8 GetItemListPosition(u8 pocketId);
 bool8 UseRegisteredKeyItemOnField(void);
 void CB2_GoToSellMenu(void);
-void GoToBagMenu(u8 location, u8 pocket, void ( *exitCallback)());
+void GoToBagMenu(u8 location, u8 pocket, MainCallback exitCallback);
 void DoWallyTutorialBagMenu(void);
 void ResetBagScrollPositions(void);
-void ChooseBerryForMachine(void (*exitCallback)(void));
+void ChooseBerryForMachine(MainCallback exitCallback);
 void CB2_ChooseBerry(void);
 void CB2_ChooseMulch(void);
 void Task_FadeAndCloseBagMenu(u8 taskId);
diff --git a/include/mail.h b/include/mail.h
index 403078f097..de29b21d42 100644
--- a/include/mail.h
+++ b/include/mail.h
@@ -1,6 +1,8 @@
 #ifndef GUARD_MAIL_H
 #define GUARD_MAIL_H
 
+#include "main.h"
+
 #define IS_ITEM_MAIL(itemId) ((itemId == ITEM_ORANGE_MAIL           \
                               || itemId == ITEM_HARBOR_MAIL         \
                               || itemId == ITEM_GLITTER_MAIL        \
@@ -15,7 +17,7 @@
                               || itemId == ITEM_RETRO_MAIL))
 
 // mail.h
-void ReadMail(struct Mail *mail, void (*exitCallback)(void), bool8 hasText);
+void ReadMail(struct Mail *mail, MainCallback exitCallback, bool8 hasText);
 
 // mail_data.h
 void ClearAllMail(void);
diff --git a/include/rayquaza_scene.h b/include/rayquaza_scene.h
index 422b591273..6a51b9a45f 100644
--- a/include/rayquaza_scene.h
+++ b/include/rayquaza_scene.h
@@ -1,6 +1,8 @@
 #ifndef GUARD_RAYQUAZA_SCENE_H
 #define GUARD_RAYQUAZA_SCENE_H
 
-void DoRayquazaScene(u8 animId, bool8 endEarly, void (*exitCallback)(void));
+#include "main.h"
+
+void DoRayquazaScene(u8 animId, bool8 endEarly, MainCallback exitCallback);
 
 #endif // GUARD_RAYQUAZA_SCENE_H
diff --git a/include/save.h b/include/save.h
index aef84c3158..1bc4c02404 100644
--- a/include/save.h
+++ b/include/save.h
@@ -1,6 +1,8 @@
 #ifndef GUARD_SAVE_H
 #define GUARD_SAVE_H
 
+#include "main.h"
+
 // Each 4 KiB flash sector contains 3968 bytes of actual data followed by 116 bytes of SaveBlock3 and then 12 bytes of footer.
 #define SECTOR_DATA_SIZE 3968
 #define SAVE_BLOCK_3_CHUNK_SIZE 116
@@ -87,7 +89,7 @@ extern u32 gSaveCounter;
 extern struct SaveSector *gFastSaveSector;
 extern u16 gIncrementalSectorId;
 extern u16 gSaveFileStatus;
-extern void (*gGameContinueCallback)(void);
+extern MainCallback gGameContinueCallback;
 extern struct SaveSectorLocation gRamSaveSectorLocations[];
 
 extern struct SaveSector gSaveDataBuffer;
diff --git a/src/battle_main.c b/src/battle_main.c
index cb41e88c73..ad5ccac4ba 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -244,7 +244,7 @@ EWRAM_DATA u8 gPartyCriticalHits[PARTY_SIZE] = {0};
 EWRAM_DATA static u8 sTriedEvolving = 0;
 EWRAM_DATA u8 gCategoryIconSpriteId = 0;
 
-COMMON_DATA void (*gPreBattleCallback1)(void) = NULL;
+COMMON_DATA MainCallback gPreBattleCallback1 = NULL;
 COMMON_DATA void (*gBattleMainFunc)(void) = NULL;
 COMMON_DATA struct BattleResults gBattleResults = {0};
 COMMON_DATA u8 gLeveledUpInBattle = 0;
diff --git a/src/battle_pyramid_bag.c b/src/battle_pyramid_bag.c
index 4a5d1c3a4e..b5ce9620cc 100644
--- a/src/battle_pyramid_bag.c
+++ b/src/battle_pyramid_bag.c
@@ -16,7 +16,6 @@
 #include "item_use.h"
 #include "list_menu.h"
 #include "mail.h"
-#include "main.h"
 #include "malloc.h"
 #include "menu.h"
 #include "menu_helpers.h"
@@ -414,7 +413,7 @@ void CB2_ReturnToPyramidBagMenu(void)
     GoToBattlePyramidBagMenu(PYRAMIDBAG_LOC_PREV, gPyramidBagMenuState.exitCallback);
 }
 
-void GoToBattlePyramidBagMenu(u8 location, void (*exitCallback)(void))
+void GoToBattlePyramidBagMenu(u8 location, MainCallback exitCallback)
 {
     gPyramidBagMenu = AllocZeroed(sizeof(*gPyramidBagMenu));
 
diff --git a/src/dodrio_berry_picking.c b/src/dodrio_berry_picking.c
index 2593719022..f4b339d417 100644
--- a/src/dodrio_berry_picking.c
+++ b/src/dodrio_berry_picking.c
@@ -11,7 +11,6 @@
 #include "link.h"
 #include "link_rfu.h"
 #include "m4a.h"
-#include "main.h"
 #include "palette.h"
 #include "minigame_countdown.h"
 #include "random.h"
@@ -224,7 +223,7 @@ struct DodrioGame_ScoreResults
 
 struct DodrioGame
 {
-    /*0x0000*/ void (*exitCallback)(void);
+    /*0x0000*/ MainCallback exitCallback;
     /*0x0004*/ u8 ALIGNED(4) taskId;
     /*0x0008*/ u8 ALIGNED(4) playersReceived;
     /*0x000C*/ u8 ALIGNED(4) startState;
@@ -662,7 +661,7 @@ static void (*const sMemberFuncs[])(void) =
     [FUNC_WAIT_END_GAME]  = WaitEndGame_Member
 };
 
-void StartDodrioBerryPicking(u16 partyId, void (*exitCallback)(void))
+void StartDodrioBerryPicking(u16 partyId, MainCallback exitCallback)
 {
     sExitingGame = FALSE;
 
diff --git a/src/frontier_pass.c b/src/frontier_pass.c
index 90699506d4..ac8df01c2a 100644
--- a/src/frontier_pass.c
+++ b/src/frontier_pass.c
@@ -106,7 +106,7 @@ enum {
 
 struct FrontierPassData
 {
-    void (*callback)(void);
+    MainCallback callback;
     u16 state;
     u16 battlePoints;
     s16 cursorX;
@@ -137,14 +137,14 @@ struct FrontierPassGfx
 
 struct FrontierPassSaved
 {
-    void (*callback)(void);
+    MainCallback callback;
     s16 cursorX;
     s16 cursorY;
 };
 
 struct FrontierMapData
 {
-    void (*callback)(void);
+    MainCallback callback;
     struct Sprite *cursorSprite;
     struct Sprite *playerHeadSprite;
     struct Sprite *mapIndicatorSprite;
@@ -160,8 +160,8 @@ static EWRAM_DATA struct FrontierPassGfx *sPassGfx = NULL;
 static EWRAM_DATA struct FrontierMapData *sMapData = NULL;
 static EWRAM_DATA struct FrontierPassSaved sSavedPassData = {0};
 
-static u32 AllocateFrontierPassData(void (*callback)(void));
-static void ShowFrontierMap(void (*callback)(void));
+static u32 AllocateFrontierPassData(MainCallback callback);
+static void ShowFrontierMap(MainCallback callback);
 static void CB2_InitFrontierPass(void);
 static void DrawFrontierPassBg(void);
 static void FreeCursorAndSymbolSprites(void);
@@ -604,7 +604,7 @@ static void LeaveFrontierPass(void)
     FreeFrontierPassData();
 }
 
-static u32 AllocateFrontierPassData(void (*callback)(void))
+static u32 AllocateFrontierPassData(MainCallback callback)
 {
     u8 i;
 
@@ -1363,7 +1363,7 @@ static void PrintOnFrontierMap(void);
 static void InitFrontierMapSprites(void);
 static void HandleFrontierMapCursorMove(u8 direction);
 
-static void ShowFrontierMap(void (*callback)(void))
+static void ShowFrontierMap(MainCallback callback)
 {
     if (sMapData != NULL)
         SetMainCallback2(callback); // This line doesn't make sense at all, since it gets overwritten later anyway.
diff --git a/src/item_menu.c b/src/item_menu.c
index e0954c0587..bda30a95c1 100755
--- a/src/item_menu.c
+++ b/src/item_menu.c
@@ -24,7 +24,6 @@
 #include "list_menu.h"
 #include "link.h"
 #include "mail.h"
-#include "main.h"
 #include "malloc.h"
 #include "map_name_popup.h"
 #include "menu.h"
@@ -614,7 +613,7 @@ void CB2_ChooseMulch(void)
 }
 
 // Choosing berry for Berry Blender or Berry Crush
-void ChooseBerryForMachine(void (*exitCallback)(void))
+void ChooseBerryForMachine(MainCallback exitCallback)
 {
     GoToBagMenu(ITEMMENULOCATION_BERRY_BLENDER_CRUSH, POCKET_BERRIES, exitCallback);
 }
@@ -648,7 +647,7 @@ void QuizLadyOpenBagMenu(void)
     gSpecialVar_Result = FALSE;
 }
 
-void GoToBagMenu(u8 location, u8 pocket, void ( *exitCallback)())
+void GoToBagMenu(u8 location, u8 pocket, MainCallback exitCallback)
 {
     gBagMenu = AllocZeroed(sizeof(*gBagMenu));
     if (gBagMenu == NULL)
diff --git a/src/mail.c b/src/mail.c
index 34d1520ef4..67accf3031 100644
--- a/src/mail.c
+++ b/src/mail.c
@@ -1,7 +1,6 @@
 #include "global.h"
 #include "mail.h"
 #include "constants/items.h"
-#include "main.h"
 #include "overworld.h"
 #include "task.h"
 #include "scanline_effect.h"
@@ -443,7 +442,7 @@ static const struct MailLayout sMailLayouts_Tall[] = {
     },
 };
 
-void ReadMail(struct Mail *mail, void (*exitCallback)(void), bool8 hasText)
+void ReadMail(struct Mail *mail, MainCallback exitCallback, bool8 hasText)
 {
     u16 buffer[2];
     u16 species;
diff --git a/src/pokeblock.c b/src/pokeblock.c
index 2e6aaf5ccd..d26a271f9c 100644
--- a/src/pokeblock.c
+++ b/src/pokeblock.c
@@ -62,7 +62,7 @@ enum {
 struct PokeblockMenuStruct
 {
     u8 tilemap[BG_SCREEN_SIZE];
-    void (*callbackOnUse)(void);
+    MainCallback callbackOnUse;
     const u8 *pokeblockActionIds;
     u8 numActions;
     u8 caseId;
@@ -80,7 +80,7 @@ struct PokeblockMenuStruct
 
 struct PokeblockSavedData
 {
-    void (*callback)(void);
+    MainCallback callback;
     u16 selectedRow;
     u16 scrollOffset;
 };
diff --git a/src/rayquaza_scene.c b/src/rayquaza_scene.c
index 5440ad802d..62060128fa 100644
--- a/src/rayquaza_scene.c
+++ b/src/rayquaza_scene.c
@@ -5,7 +5,6 @@
 #include "task.h"
 #include "graphics.h"
 #include "bg.h"
-#include "main.h"
 #include "malloc.h"
 #include "palette.h"
 #include "scanline_effect.h"
@@ -1287,7 +1286,7 @@ static const struct BgTemplate sBgTemplates_ChasesAway[] =
     }
 };
 
-void DoRayquazaScene(u8 animId, bool8 endEarly, void (*exitCallback)(void))
+void DoRayquazaScene(u8 animId, bool8 endEarly, MainCallback exitCallback)
 {
     sRayScene = AllocZeroed(sizeof(*sRayScene));
     sRayScene->animId = animId;
diff --git a/src/save.c b/src/save.c
index 4e6c41b6f9..5d17cea210 100644
--- a/src/save.c
+++ b/src/save.c
@@ -9,7 +9,6 @@
 #include "overworld.h"
 #include "hall_of_fame.h"
 #include "pokemon_storage_system.h"
-#include "main.h"
 #include "trainer_hill.h"
 #include "link.h"
 #include "constants/game_stat.h"
@@ -92,7 +91,7 @@ COMMON_DATA struct SaveSector *gReadWriteSector = NULL; // Pointer to a buffer f
 COMMON_DATA u16 gIncrementalSectorId = 0;
 COMMON_DATA u16 gSaveUnusedVar = 0;
 COMMON_DATA u16 gSaveFileStatus = 0;
-COMMON_DATA void (*gGameContinueCallback)(void) = NULL;
+COMMON_DATA MainCallback gGameContinueCallback = NULL;
 COMMON_DATA struct SaveSectorLocation gRamSaveSectorLocations[NUM_SECTORS_PER_SLOT] = {0};
 COMMON_DATA u16 gSaveUnusedVar2 = 0;
 COMMON_DATA u16 gSaveAttemptStatus = 0;
@@ -897,7 +896,7 @@ u8 LoadGameSave(u8 saveType)
         status = TryLoadSaveSlot(FULL_SAVE_SLOT, gRamSaveSectorLocations);
         CopyPartyAndObjectsFromSave();
         gSaveFileStatus = status;
-        gGameContinueCallback = 0;
+        gGameContinueCallback = NULL;
         break;
     case SAVE_HALL_OF_FAME:
         if (gHoFSaveBuffer != NULL)
diff --git a/src/save_failed_screen.c b/src/save_failed_screen.c
index d4ce636357..8ce47d3f3f 100644
--- a/src/save_failed_screen.c
+++ b/src/save_failed_screen.c
@@ -336,7 +336,7 @@ static void CB2_ReturnToTitleScreen(void)
         }
         else
         {
-            SetMainCallback2((MainCallback)gGameContinueCallback);
+            SetMainCallback2(gGameContinueCallback);
             gGameContinueCallback = NULL;
         }
     }
diff --git a/src/shop.c b/src/shop.c
index 6eaa0ba01a..e983213963 100644
--- a/src/shop.c
+++ b/src/shop.c
@@ -458,7 +458,7 @@ static void Task_GoToBuyOrSellMenu(u8 taskId)
     if (!gPaletteFade.active)
     {
         DestroyTask(taskId);
-        SetMainCallback2((void *)((u16)tCallbackHi << 16 | (u16)tCallbackLo));
+        SetMainCallback2((MainCallback)((u16)tCallbackHi << 16 | (u16)tCallbackLo));
     }
 }
 
diff --git a/src/trainer_card.c b/src/trainer_card.c
index d385898f44..e03b34daad 100755
--- a/src/trainer_card.c
+++ b/src/trainer_card.c
@@ -78,7 +78,7 @@ struct TrainerCardData
     u8 cardType;
     bool8 isHoenn;
     u16 blendColor;
-    void (*callback2)(void);
+    MainCallback callback2;
     struct TrainerCard trainerCard;
     u16 frontTilemap[600];
     u16 backTilemap[600];
diff --git a/src/use_pokeblock.c b/src/use_pokeblock.c
index 27e5639a54..db4541a7f1 100644
--- a/src/use_pokeblock.c
+++ b/src/use_pokeblock.c
@@ -50,7 +50,7 @@ enum {
 struct UsePokeblockSession
 {
     void (*callback)(void);
-    void (*exitCallback)(void);
+    MainCallback exitCallback;
     struct Pokeblock *pokeblock;
     struct Pokemon *mon;
     u8 stringBuffer[64];
@@ -162,7 +162,7 @@ extern const u16 gConditionText_Pal[];
 // The below 3 are saved for returning to the screen after feeding a pokeblock to a mon
 // so that the rest of the data can be freed
 static EWRAM_DATA struct UsePokeblockSession *sInfo = NULL;
-static EWRAM_DATA void (*sExitCallback)(void) = NULL;
+static EWRAM_DATA MainCallback sExitCallback = NULL;
 static EWRAM_DATA struct Pokeblock *sPokeblock = NULL;
 EWRAM_DATA u8 gPokeblockMonId = 0;
 EWRAM_DATA s16 gPokeblockGain = 0;
diff --git a/src/wild_encounter.c b/src/wild_encounter.c
index 0ace7499a4..5d8e22c11b 100644
--- a/src/wild_encounter.c
+++ b/src/wild_encounter.c
@@ -1,20 +1,23 @@
 #include "global.h"
-#include "wild_encounter.h"
-#include "pokemon.h"
-#include "metatile_behavior.h"
+#include "battle_setup.h"
+#include "battle_pike.h"
+#include "battle_pyramid.h"
+#include "event_data.h"
 #include "fieldmap.h"
 #include "follower_npc.h"
 #include "random.h"
 #include "field_player_avatar.h"
-#include "event_data.h"
-#include "safari_zone.h"
+#include "link.h"
+#include "metatile_behavior.h"
 #include "overworld.h"
 #include "pokeblock.h"
-#include "battle_setup.h"
+#include "pokemon.h"
+#include "random.h"
 #include "roamer.h"
-#include "tv.h"
-#include "link.h"
+#include "safari_zone.h"
 #include "script.h"
+#include "tv.h"
+#include "wild_encounter.h"
 #include "battle_debug.h"
 #include "battle_pike.h"
 #include "battle_pyramid.h"