diff --git a/include/structs/dungeon_entity.h b/include/structs/dungeon_entity.h
index 542d72370..2c8f2ca18 100644
--- a/include/structs/dungeon_entity.h
+++ b/include/structs/dungeon_entity.h
@@ -30,11 +30,11 @@
 #define STAT_STAGE_EVASION 1
 
 // size: 0x8
-typedef struct unkStruct_8044CC8
+typedef struct ActionParameter
 {
     /* 0x0 */ u8 actionUseIndex;
     /* 0x4 */ DungeonPos lastItemThrowPosition;
-} unkStruct_8044CC8;
+} ActionParameter;
 
 // size: 0x18
 typedef struct ActionContainer
@@ -43,7 +43,7 @@ typedef struct ActionContainer
     /* 0x2 */ u8 direction;
     u8 unk3;
     // Additional parameter alongside actionIndex. Used for things like indicating which move a Pokémon should use from its moveset.
-    /* 0x4 */ unkStruct_8044CC8 unk4[2];
+    /* 0x4 */ ActionParameter actionParameters[2];
     // Position of the target that the Pokémon wants throw an item at.
     /* 0x14 */ DungeonPos itemTargetPosition;
 } ActionContainer;
diff --git a/src/code_8044CC8.c b/src/code_8044CC8.c
index ca7285cf3..89bd2e46c 100644
--- a/src/code_8044CC8.c
+++ b/src/code_8044CC8.c
@@ -36,7 +36,7 @@ extern u8 GetFloorType(void);
 void sub_80460F8(DungeonPos *, Item *, u32);
 bool8 sub_80461C8(DungeonPos *, u32);
 
-Item * sub_8044CC8(Entity *param_1, unkStruct_8044CC8 *param_2)
+Item * sub_8044CC8(Entity *param_1, ActionParameter *param_2)
 {
   const Tile *tile;
   Item *item;
@@ -67,9 +67,9 @@ Item * sub_8044CC8(Entity *param_1, unkStruct_8044CC8 *param_2)
 bool8 sub_8044D40(ActionContainer *param_1,s32 index)
 {
   Item *item;
-  unkStruct_8044CC8 *puVar1;
+  ActionParameter *puVar1;
 
-  puVar1 = &param_1->unk4[index];
+  puVar1 = &param_1->actionParameters[index];
   if ((u8)(puVar1->actionUseIndex - 1) < INVENTORY_SIZE) {
     item = &gTeamInventoryRef->teamItems[puVar1->actionUseIndex - 1];
     item->id = ITEM_NOTHING;
@@ -88,14 +88,18 @@ bool8 sub_8044D40(ActionContainer *param_1,s32 index)
 
 Item *sub_8044D90(Entity *entity, s32 index, s32 unused) {
     EntityInfo *info = GetEntInfo(entity);
-    register unkStruct_8044CC8 *puVar1 asm("r3") = &info->action.unk4[index];
+#ifdef NONMATCHING
+    ActionParameter *puVar1 = &info->action.actionParameters[index];
+#else
+    register ActionParameter *puVar1 asm("r3") = &info->action.actionParameters[index];
+#endif
     return sub_8044CC8(entity, puVar1);
 }
 
 Entity *sub_8044DA4(Entity *entity, s32 index)
 {
     EntityInfo *info = GetEntInfo(entity);
-    return gDungeon->teamPokemon[info->action.unk4[index].actionUseIndex];
+    return gDungeon->teamPokemon[info->action.actionParameters[index].actionUseIndex];
 }
 
 u16 sub_8044DC8(Item *param_1)
@@ -115,8 +119,8 @@ void sub_8044DF0(Entity *entity, s32 index, u32 unused)
 
   info = GetEntInfo(entity);
   item = sub_8044D90(entity,index,unused);
-  if ((info->action).unk4[0].actionUseIndex == 0x80) {
-    sub_80461C8(&(info->action).unk4[0].lastItemThrowPosition,1);
+  if ((info->action).actionParameters[0].actionUseIndex == 0x80) {
+    sub_80461C8(&(info->action).actionParameters[0].lastItemThrowPosition,1);
   }
   else {
     item->id = ITEM_NOTHING;
@@ -138,9 +142,9 @@ void sub_8044E24(Entity *entity,int index,u32 unused)
   info = GetEntInfo(entity);
   if (!IsHMItem(itemPtr->id)) {
     if (GetItemCategory(itemPtr->id) == CATEGORY_TMS_HMS) {
-      if (info->action.unk4[index].actionUseIndex == 0x80) {
+      if (info->action.actionParameters[index].actionUseIndex == 0x80) {
         item = *itemPtr;
-        pos = &info->action.unk4[index].lastItemThrowPosition;
+        pos = &info->action.actionParameters[index].lastItemThrowPosition;
         sub_80461C8(pos,1);
         item.quantity = itemPtr->id - 125;
         item.id = ITEM_TM_USED_TM;
diff --git a/src/code_805D8C8_1.c b/src/code_805D8C8_1.c
index 1fd19e071..4ffc2fe36 100644
--- a/src/code_805D8C8_1.c
+++ b/src/code_805D8C8_1.c
@@ -192,7 +192,7 @@ void DungeonHandlePlayerInput(void)
         if (gDungeon->unk644.unk28 != 0) {
             if (sub_805E874() != 0) {
                 leaderInfo->action.action = 2;
-                leaderInfo->action.unk4[0].actionUseIndex = 0;
+                leaderInfo->action.actionParameters[0].actionUseIndex = 0;
                 break;
             }
             sub_805E804();
@@ -305,8 +305,8 @@ void DungeonHandlePlayerInput(void)
                     }
                     else {
                         SetMonsterActionFields(&leaderInfo->action, ACTION_USE_MOVE_PLAYER);
-                        leaderInfo->action.unk4[0].actionUseIndex = GetTeamMemberEntityIndex(leader);
-                        leaderInfo->action.unk4[1].actionUseIndex = i;
+                        leaderInfo->action.actionParameters[0].actionUseIndex = GetTeamMemberEntityIndex(leader);
+                        leaderInfo->action.actionParameters[1].actionUseIndex = i;
                     }
                     break;
                 }
@@ -412,9 +412,9 @@ void DungeonHandlePlayerInput(void)
                 for (i = 0; i < INVENTORY_SIZE; i++) {
                     if (ItemExists(&gTeamInventoryRef->teamItems[i]) && ItemSet(&gTeamInventoryRef->teamItems[i])) {
                         sub_8044C50(ACTION_THROW_ITEM_PLAYER);
-                        leaderInfo->action.unk4[0].actionUseIndex = i +1;
-                        leaderInfo->action.unk4[0].lastItemThrowPosition.x = 0;
-                        leaderInfo->action.unk4[0].lastItemThrowPosition.y = 0;
+                        leaderInfo->action.actionParameters[0].actionUseIndex = i +1;
+                        leaderInfo->action.actionParameters[0].lastItemThrowPosition.x = 0;
+                        leaderInfo->action.actionParameters[0].lastItemThrowPosition.y = 0;
                         break;
                     }
                 }
@@ -536,10 +536,10 @@ void DungeonHandlePlayerInput(void)
                                 if (GetEntInfo(leader)->cringeClassStatus.status != STATUS_CONFUSED) {
                                     gDungeon->unk644.unk28 = 1;
                                 }
-                                leaderInfo->action.unk4[0].actionUseIndex = 0;
+                                leaderInfo->action.actionParameters[0].actionUseIndex = 0;
                             }
                             else {
-                                leaderInfo->action.unk4[0].actionUseIndex = 1;
+                                leaderInfo->action.actionParameters[0].actionUseIndex = 1;
                             }
                         }
                         break;
@@ -963,15 +963,15 @@ bool8 sub_805EC4C(Entity *a0, u8 a1)
 
     SetMonsterActionFields(&entityInfo->action, ACTION_WALK);
     if (gRealInputs.held & B_BUTTON) {
-        entityInfo->action.unk4[0].actionUseIndex = 0;
+        entityInfo->action.actionParameters[0].actionUseIndex = 0;
     }
     else {
-        entityInfo->action.unk4[0].actionUseIndex = 1;
+        entityInfo->action.actionParameters[0].actionUseIndex = 1;
     }
     entityInfo->flags |= 0x8000;
 
     SetMonsterActionFields(&tileMonsterInfo->action, ACTION_WALK);
-    tileMonsterInfo->action.unk4[0].actionUseIndex = 0;
+    tileMonsterInfo->action.actionParameters[0].actionUseIndex = 0;
     tileMonsterInfo->action.direction = (entityInfo->action.direction + 4) & 7;
     tileMonsterInfo->flags |= 0x8000;
     tileMonsterInfo->targetPos.x = tileMonster->pos.x;
@@ -1161,7 +1161,7 @@ u16 GetLeaderActionId(void)
 
 // Could this be a start of a new file?
 static UNUSED EWRAM_DATA u8 sUnused[4] = {0};
-static EWRAM_DATA unkStruct_8044CC8 sUnknownActionUnk4 = {0};
+static EWRAM_DATA ActionParameter sUnknownActionUnk4 = {0};
 static EWRAM_DATA s32 sUnknown_202F240 = 0;
 static UNUSED EWRAM_DATA u8 sUnused2[4] = {0};
 static EWRAM_DATA s16 sUnknown_202F248[8] = {0};
@@ -1322,7 +1322,7 @@ void ShowFieldMenu(u8 a0_, bool8 a1)
                 for (i = 0; i < MAX_TEAM_MEMBERS; i++) {
                     Entity *teamMon = gDungeon->teamPokemon[i];
                     if (EntityExists(teamMon)) {
-                        if (i == GetLeaderActionContainer()->unk4[0].actionUseIndex) {
+                        if (i == GetLeaderActionContainer()->actionParameters[0].actionUseIndex) {
                             sTeamMenuChosenId = count;
                             if (GetLeaderActionId() != 0) {
                                 sub_806A2BC(teamMon, 0);
@@ -1376,7 +1376,7 @@ void ShowFieldMenu(u8 a0_, bool8 a1)
 
                 sub_806A2BC(r6, 0);
                 sub_804A728(&r6->pos, 0, 1, 1);
-                GetLeaderInfo()->action.unk4[0].actionUseIndex = r7;
+                GetLeaderInfo()->action.actionParameters[0].actionUseIndex = r7;
                 sub_8044C10(0);
                 if (sub_8062F90(r6, 0, 1, r9, r8)) {
                     r10 = -1;
@@ -1392,7 +1392,7 @@ void ShowFieldMenu(u8 a0_, bool8 a1)
                         if (sub_8071A8C(r6))
                             break;
                     }
-                    GetLeaderInfo()->action.unk4[0].actionUseIndex = r7;
+                    GetLeaderInfo()->action.actionParameters[0].actionUseIndex = r7;
                     if (r4 != r7) {
                         sub_8083CE0(0);
                     }
@@ -1408,7 +1408,7 @@ void ShowFieldMenu(u8 a0_, bool8 a1)
                         if (sub_8071A8C(r6))
                             break;
                     }
-                    GetLeaderInfo()->action.unk4[0].actionUseIndex = r7;
+                    GetLeaderInfo()->action.actionParameters[0].actionUseIndex = r7;
                     if (r4 != r7) {
                         sub_8083CE0(0);
                     }
@@ -1962,7 +1962,7 @@ bool8 sub_805FD74(Entity * a0, struct UnkMenuBitsStruct *a1)
         }
         else if (r9 == 3) {
             SetMonsterActionFields(&a0Info->action, 0xC);
-            a0Info->action.unk4[0] = sUnknownActionUnk4;
+            a0Info->action.actionParameters[0] = sUnknownActionUnk4;
             sub_803EAF0(0, NULL);
             r9 = 0;
             break;
@@ -1970,7 +1970,7 @@ bool8 sub_805FD74(Entity * a0, struct UnkMenuBitsStruct *a1)
         else {
             sUnknown_202F240 = gUnknown_202EE10.menuIndex;
             if (var_2C != 0) {
-                a0Info->action.unk4[1] = sUnknownActionUnk4;
+                a0Info->action.actionParameters[1] = sUnknownActionUnk4;
                 sub_803EAF0(0, NULL);
                 r9 = 0;
                 break;
@@ -2012,7 +2012,7 @@ bool8 sub_805FD74(Entity * a0, struct UnkMenuBitsStruct *a1)
                 if (a0Info->action.action == 0x37 || a0Info->action.action == 0x38 || a0Info->action.action == 0x3E) {
                     // Hm...
                     int newAction = sUnknownActionUnk4.actionUseIndex - 0x90;
-                    a0Info->action.unk4[0].actionUseIndex = newAction;
+                    a0Info->action.actionParameters[0].actionUseIndex = newAction;
                     sub_803EAF0(0, 0);
                     r9 = 0;
                     break;
@@ -2020,7 +2020,7 @@ bool8 sub_805FD74(Entity * a0, struct UnkMenuBitsStruct *a1)
                 else if (a0Info->action.action == 0x36) {
                     u32 var_38;
                     if (DrawFieldGiveItemMenu((void*)&var_38, 2) != NULL) {
-                        a0Info->action.unk4[1].actionUseIndex = var_38;
+                        a0Info->action.actionParameters[1].actionUseIndex = var_38;
                         sub_803EAF0(0, 0);
                         r9 = 0;
                         break;
@@ -2259,7 +2259,7 @@ void sub_8060890(DungeonPos *a0)
     sUnknownActionUnk4.lastItemThrowPosition.y = a0->y;
 }
 
-extern Item * sub_8044CC8(Entity *param_1, unkStruct_8044CC8 *param_2, UNUSED s32 a3);
+extern Item * sub_8044CC8(Entity *param_1, ActionParameter *param_2, UNUSED s32 a3);
 extern void sub_8044F5C(u16 param_1, u8 param_2);
 extern void sub_8044FF0(u16 param_1);
 extern u16 sub_8044DC8(Item *param_1);
@@ -2455,10 +2455,10 @@ void sub_8060900(Entity *a0)
 void sub_8060CE8(ActionContainer *a0)
 {
     SetMonsterActionFields(a0, gUnknown_202EE44[gUnknown_202EE10.menuIndex].unk0);
-    a0->unk4[0] = sUnknownActionUnk4;
-    a0->unk4[1].actionUseIndex = 0;
-    a0->unk4[1].lastItemThrowPosition.x = 0;
-    a0->unk4[1].lastItemThrowPosition.y = 0;
+    a0->actionParameters[0] = sUnknownActionUnk4;
+    a0->actionParameters[1].actionUseIndex = 0;
+    a0->actionParameters[1].lastItemThrowPosition.x = 0;
+    a0->actionParameters[1].lastItemThrowPosition.y = 0;
 }
 
 void sub_8060D24(UNUSED ActionContainer *a0)
@@ -2621,7 +2621,7 @@ bool8 sub_8060E38(Entity *a0)
         if (r10) {
             EntityInfo *info = GetEntInfo(a0);
             SetMonsterActionFields(&info->action, 0x1B);
-            info->action.unk4[0].actionUseIndex = sp.unk4[sp.unk0];
+            info->action.actionParameters[0].actionUseIndex = sp.unk4[sp.unk0];
             ret = FALSE;
             break;
         }
@@ -2871,7 +2871,7 @@ void sub_806145C(struct UnkFieldTeamMenuStruct *a0)
 void sub_80615B4(ActionContainer *a0, struct UnkFieldTeamMenuStruct *a1)
 {
     SetMonsterActionFields(a0, gUnknown_202EE44[gUnknown_202EE10.menuIndex].unk0);
-    a0->unk4[0].actionUseIndex = a1->unk4[a1->unk0];
+    a0->actionParameters[0].actionUseIndex = a1->unk4[a1->unk0];
 }
 
 void PrintMonTactics(s32 a0, u8 *tacticIds, EntityInfo *mon, s32 windowId);
@@ -2906,7 +2906,7 @@ void ShowTacticsMenu(ActionContainer *a0)
     Entity *teamMon;
 
     SetTxtStruct(&sp);
-    teamMon = gDungeon->teamPokemon[a0->unk4[0].actionUseIndex];
+    teamMon = gDungeon->teamPokemon[a0->actionParameters[0].actionUseIndex];
     monInfo = GetEntInfo(teamMon);
     menuIndex = 0;
     scrollFirstId = 0;
diff --git a/src/code_8066D04.c b/src/code_8066D04.c
index 1c5eb7a32..9462a3811 100644
--- a/src/code_8066D04.c
+++ b/src/code_8066D04.c
@@ -37,7 +37,7 @@ extern void sub_8045DB4(DungeonPos *, u32);
 
 void HandlePickUpPlayerAction(Entity *entity)
 {
-  GetEntInfo(entity)->action.unk4[0].actionUseIndex = 1;
+  GetEntInfo(entity)->action.actionParameters[0].actionUseIndex = 1;
   sub_8045DB4(&entity->pos,0);
 }
 
@@ -125,7 +125,7 @@ void HandleGiveItemAction(Entity *param_1)
   info2 = GetEntInfo(entity);
   item = sub_8044D90(param_1,0,2);
 
-  if((info1->action).unk4[0].actionUseIndex == 0x80)
+  if((info1->action).actionParameters[0].actionUseIndex == 0x80)
       bVar3 = TRUE;
   else
       bVar3 = FALSE;
@@ -285,13 +285,13 @@ void HandlePlaceItemAction(Entity *entity)
     Item *item = sub_8044D90(entity,0,4);
 
     sub_8045BF8(gFormatBuffer_Items[0],item);
-    if (info->action.unk4[0].actionUseIndex == 0x80) {
+    if (info->action.actionParameters[0].actionUseIndex == 0x80) {
         LogMessageByIdWithPopupCheckUser(entity,*gUnknown_80F8DE0);
     }
-    else if (info->action.unk4[0].actionUseIndex < 0x15 && (item->flags & (ITEM_FLAG_STICKY | ITEM_FLAG_SET)) == (ITEM_FLAG_STICKY | ITEM_FLAG_SET)) {
+    else if (info->action.actionParameters[0].actionUseIndex < 0x15 && (item->flags & (ITEM_FLAG_STICKY | ITEM_FLAG_SET)) == (ITEM_FLAG_STICKY | ITEM_FLAG_SET)) {
         LogMessageByIdWithPopupCheckUser(entity,*gUnknown_80F8BE0);
     }
-    else if (info->action.unk4[0].actionUseIndex == 0x81 && (item->flags & ITEM_FLAG_STICKY)) {
+    else if (info->action.actionParameters[0].actionUseIndex == 0x81 && (item->flags & ITEM_FLAG_STICKY)) {
         LogMessageByIdWithPopupCheckUser(entity,*gUnknown_80F8BE0);
     }
     else {
diff --git a/src/dungeon_action.c b/src/dungeon_action.c
index 866b1506d..f3be3a10c 100644
--- a/src/dungeon_action.c
+++ b/src/dungeon_action.c
@@ -225,8 +225,8 @@ void sub_8044C10(u8 param_1)
 
     if(param_1)
     {
-        entityInfo->action.unk4[0].actionUseIndex = 0;
-        entityInfo->action.unk4[1].actionUseIndex = 0;
+        entityInfo->action.actionParameters[0].actionUseIndex = 0;
+        entityInfo->action.actionParameters[1].actionUseIndex = 0;
         entityInfo->action.itemTargetPosition.x = -1;
         entityInfo->action.itemTargetPosition.y = -1;
     }
@@ -237,8 +237,8 @@ void sub_8044C50(u16 action)
     EntityInfo * entityInfo = GetLeaderInfo();
 
     entityInfo->action.action = action;
-    entityInfo->action.unk4[0].actionUseIndex = 0;
-    entityInfo->action.unk4[1].actionUseIndex = 0;
+    entityInfo->action.actionParameters[0].actionUseIndex = 0;
+    entityInfo->action.actionParameters[1].actionUseIndex = 0;
 
     entityInfo->action.itemTargetPosition.x = -1;
     entityInfo->action.itemTargetPosition.y = -1;
@@ -247,15 +247,15 @@ void sub_8044C50(u16 action)
 void ClearMonsterActionFields(ActionContainer *actionPointer)
 {
     actionPointer->action = ACTION_NOTHING;
-    actionPointer->unk4[0].actionUseIndex = 0;
-    actionPointer->unk4[1].actionUseIndex = 0;
+    actionPointer->actionParameters[0].actionUseIndex = 0;
+    actionPointer->actionParameters[1].actionUseIndex = 0;
 }
 
 void SetMonsterActionFields(ActionContainer *actionPointer, u16 action)
 {
     actionPointer->action = action;
-    actionPointer->unk4[0].actionUseIndex = 0;
-    actionPointer->unk4[1].actionUseIndex = 0;
+    actionPointer->actionParameters[0].actionUseIndex = 0;
+    actionPointer->actionParameters[1].actionUseIndex = 0;
 }
 
 void SetActionPassTurnOrWalk(ActionContainer *actionPointer, s16 species)
@@ -268,6 +268,6 @@ void SetActionPassTurnOrWalk(ActionContainer *actionPointer, s16 species)
     {
         actionPointer->action = ACTION_PASS_TURN;
     }
-    actionPointer->unk4[0].actionUseIndex = 0;
-    actionPointer->unk4[1].actionUseIndex = 0;
+    actionPointer->actionParameters[0].actionUseIndex = 0;
+    actionPointer->actionParameters[1].actionUseIndex = 0;
 }
diff --git a/src/dungeon_ai_attack.c b/src/dungeon_ai_attack.c
index 38b58a35e..b97a974c6 100644
--- a/src/dungeon_ai_attack.c
+++ b/src/dungeon_ai_attack.c
@@ -107,7 +107,7 @@ void ChooseAIMove(Entity *pokemon)
                         }
                     }
                 }
-                pokemonInfo->action.unk4[0].actionUseIndex = chosenMoveIndex;
+                pokemonInfo->action.actionParameters[0].actionUseIndex = chosenMoveIndex;
                 TargetTileInFront(pokemon);
                 return;
             }
@@ -331,7 +331,7 @@ void ChooseAIMove(Entity *pokemon)
                             }
                         }
                         pokemonInfo->action.direction = aiPossibleMove[i].direction & DIRECTION_MASK;
-                        pokemonInfo->action.unk4[0].actionUseIndex = chosenMoveIndex;
+                        pokemonInfo->action.actionParameters[0].actionUseIndex = chosenMoveIndex;
                         TargetTileInFront(pokemon);
                     }
                     else
@@ -952,7 +952,7 @@ void HandleUseMoveAIAction(Entity *target)
         if (counter >= sub_8070828(target, TRUE))
             break;
         entityInfo = GetEntInfo(target);
-        sub_8055A00(target, entityInfo->action.unk4[0].actionUseIndex, 1, 0, 0);
+        sub_8055A00(target, entityInfo->action.actionParameters[0].actionUseIndex, 1, 0, 0);
         if (!EntityExists(target))
             break;
         if (sub_8044B28())
@@ -964,7 +964,7 @@ void HandleUseMoveAIAction(Entity *target)
 
     sub_8057588(target, 1);
     if (EntityExists(target))
-        sub_806A9B4(target, GetEntInfo(target)->action.unk4[0].actionUseIndex);
+        sub_806A9B4(target, GetEntInfo(target)->action.actionParameters[0].actionUseIndex);
 
     sub_806A1B0(target);
 }
diff --git a/src/dungeon_ai_items.c b/src/dungeon_ai_items.c
index f12fb2501..5f0de764d 100644
--- a/src/dungeon_ai_items.c
+++ b/src/dungeon_ai_items.c
@@ -96,9 +96,9 @@ void AIDecideUseItem(Entity *pokemon)
                     if (DungeonRandOutcome(gAIThrownItemProbabilities[targetIndex]))
                     {
                         SetMonsterActionFields(&pokemonInfo->action, ACTION_THROW_ITEM_AI);
-                        pokemonInfo->action.unk4[0].actionUseIndex = selectedToolboxIndex;
-                        pokemonInfo->action.unk4[0].lastItemThrowPosition.x = pokemon->pos.x;
-                        pokemonInfo->action.unk4[0].lastItemThrowPosition.y = pokemon->pos.y;
+                        pokemonInfo->action.actionParameters[0].actionUseIndex = selectedToolboxIndex;
+                        pokemonInfo->action.actionParameters[0].lastItemThrowPosition.x = pokemon->pos.x;
+                        pokemonInfo->action.actionParameters[0].lastItemThrowPosition.y = pokemon->pos.y;
                         pokemonInfo->action.direction = gAIThrownItemDirections[targetIndex] & DIRECTION_MASK;
                         break;
                     }
@@ -120,9 +120,9 @@ void AIDecideUseItem(Entity *pokemon)
                 {
                     u32 chosenTargetIndex = DungeonRandInt(gAIThrowItemActionChoiceCount);
                     SetMonsterActionFields(&pokemonInfo->action, ACTION_THROW_ITEM_AI);
-                    pokemonInfo->action.unk4[0].actionUseIndex = selectedToolboxIndex;
-                    pokemonInfo->action.unk4[0].lastItemThrowPosition.x = pokemon->pos.x;
-                    pokemonInfo->action.unk4[0].lastItemThrowPosition.y = pokemon->pos.y;
+                    pokemonInfo->action.actionParameters[0].actionUseIndex = selectedToolboxIndex;
+                    pokemonInfo->action.actionParameters[0].lastItemThrowPosition.x = pokemon->pos.x;
+                    pokemonInfo->action.actionParameters[0].lastItemThrowPosition.y = pokemon->pos.y;
                     pokemonInfo->action.direction = GetDirectionTowardsPosition(&pokemon->pos, &potentialTargetPositions[chosenTargetIndex]) & DIRECTION_MASK;
                     pokemonInfo->action.itemTargetPosition = potentialTargetPositions[chosenTargetIndex];
                 }
@@ -133,9 +133,9 @@ void AIDecideUseItem(Entity *pokemon)
                 if (itemTypeCompare < CATEGORY_HELD_ITEMS - 2)
                 {
                     SetMonsterActionFields(&pokemonInfo->action, ACTION_EAT_AI);
-                    pokemonInfo->action.unk4[0].actionUseIndex = selectedToolboxIndex;
-                    pokemonInfo->action.unk4[0].lastItemThrowPosition.x = pokemon->pos.x;
-                    pokemonInfo->action.unk4[0].lastItemThrowPosition.y = pokemon->pos.y;
+                    pokemonInfo->action.actionParameters[0].actionUseIndex = selectedToolboxIndex;
+                    pokemonInfo->action.actionParameters[0].lastItemThrowPosition.x = pokemon->pos.x;
+                    pokemonInfo->action.actionParameters[0].lastItemThrowPosition.y = pokemon->pos.y;
                 }
                 else
                 {
@@ -205,9 +205,9 @@ void AIDecideUseItem(Entity *pokemon)
                                 {
                                     SetMonsterActionFields(&pokemonInfo->action, ACTION_EAT_AI);
                                 }
-                                pokemonInfo->action.unk4[0].actionUseIndex = selectedToolboxIndex;
-                                pokemonInfo->action.unk4[0].lastItemThrowPosition.x = pokemon->pos.x;
-                                pokemonInfo->action.unk4[0].lastItemThrowPosition.y = pokemon->pos.y;
+                                pokemonInfo->action.actionParameters[0].actionUseIndex = selectedToolboxIndex;
+                                pokemonInfo->action.actionParameters[0].lastItemThrowPosition.x = pokemon->pos.x;
+                                pokemonInfo->action.actionParameters[0].lastItemThrowPosition.y = pokemon->pos.y;
                                 return;
                             }
                         }
@@ -239,9 +239,9 @@ void AIDecideUseItem(Entity *pokemon)
                             {
                                 u32 chosenTargetIndex = DungeonRandInt(gAIThrowItemActionChoiceCount);
                                 SetMonsterActionFields(&pokemonInfo->action, ACTION_THROW_ITEM_AI);
-                                pokemonInfo->action.unk4[0].actionUseIndex = selectedToolboxIndex;
-                                pokemonInfo->action.unk4[0].lastItemThrowPosition.x = pokemon->pos.x;
-                                pokemonInfo->action.unk4[0].lastItemThrowPosition.y = pokemon->pos.y;
+                                pokemonInfo->action.actionParameters[0].actionUseIndex = selectedToolboxIndex;
+                                pokemonInfo->action.actionParameters[0].lastItemThrowPosition.x = pokemon->pos.x;
+                                pokemonInfo->action.actionParameters[0].lastItemThrowPosition.y = pokemon->pos.y;
                                 pokemonInfo->action.direction = GetDirectionTowardsPosition(&pokemon->pos, &potentialTargetPositions[chosenTargetIndex]) & DIRECTION_MASK;
                                 pokemonInfo->action.itemTargetPosition = potentialTargetPositions[chosenTargetIndex];
                                 return;
@@ -256,9 +256,9 @@ void AIDecideUseItem(Entity *pokemon)
                                 if (DungeonRandOutcome(potentialTargetWeights[targetIndex]))
                                 {
                                     SetMonsterActionFields(&pokemonInfo->action, ACTION_THROW_ITEM_AI);
-                                    pokemonInfo->action.unk4[0].actionUseIndex = selectedToolboxIndex;
-                                    pokemonInfo->action.unk4[0].lastItemThrowPosition.x = pokemon->pos.x;
-                                    pokemonInfo->action.unk4[0].lastItemThrowPosition.y = pokemon->pos.y;
+                                    pokemonInfo->action.actionParameters[0].actionUseIndex = selectedToolboxIndex;
+                                    pokemonInfo->action.actionParameters[0].lastItemThrowPosition.x = pokemon->pos.x;
+                                    pokemonInfo->action.actionParameters[0].lastItemThrowPosition.y = pokemon->pos.y;
                                     pokemonInfo->action.direction = gAIThrownItemDirections[targetIndex] & DIRECTION_MASK;
                                     return;
                                 }
diff --git a/src/dungeon_ai_leader.c b/src/dungeon_ai_leader.c
index 0800f8b8e..599fb1882 100644
--- a/src/dungeon_ai_leader.c
+++ b/src/dungeon_ai_leader.c
@@ -262,7 +262,7 @@ bool8 sub_8072CF4(Entity *entity)
             HandleUnsetItemAction(entity, TRUE);
             break;
         case 0x3b:
-            gDungeon->unkBC = gDungeon->teamPokemon[(info->action).unk4[0].actionUseIndex];
+            gDungeon->unkBC = gDungeon->teamPokemon[(info->action).actionParameters[0].actionUseIndex];
             break;
         case ACTION_PLACE_ITEM:
             HandlePlaceItemAction(entity);
diff --git a/src/status_checks.c b/src/status_checks.c
index 8ee12c013..27f51831e 100644
--- a/src/status_checks.c
+++ b/src/status_checks.c
@@ -171,7 +171,7 @@ bool8 sub_80701A4(Entity *pokemon)
                     (pokemonInfo->bideClassStatus.moveSlot == index)) {
                         SetMonsterActionFields(&pokemonInfo->action, ACTION_USE_MOVE_PLAYER);
                         index_1 = index;
-                        r7 = &pokemonInfo->action.unk4[1].actionUseIndex;
+                        r7 = &pokemonInfo->action.actionParameters[1].actionUseIndex;
                         if((index > 0) && (move->moveFlags & MOVE_FLAG_SUBSEQUENT_IN_LINK_CHAIN))
                         {
                             do {