diff --git a/src/battle_controllers.c b/src/battle_controllers.c
index d5d3e479e0..6424bee41e 100644
--- a/src/battle_controllers.c
+++ b/src/battle_controllers.c
@@ -152,7 +152,7 @@ static void InitSinglePlayerBtlControllers(void)
 
         gBattlerPartyIndexes[0] = 0;
         gBattlerPartyIndexes[1] = 0;
-        if (BATTLE_TWO_VS_ONE_OPPONENT)
+        if (BATTLE_TWO_VS_ONE_OPPONENT || WILD_DOUBLE_BATTLE)
         {
             gBattlerPartyIndexes[2] = 3;
             gBattlerPartyIndexes[3] = 1;
diff --git a/src/battle_main.c b/src/battle_main.c
index 855e770172..25736731c7 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -4595,7 +4595,11 @@ static void HandleTurnActionSelectionState(void)
         {
             // if we choose to throw a ball with our second mon, skip the action of the first
             // (if we have chosen throw ball with first, second's is already skipped)
-            gChosenActionByBattler[GetBattlerAtPosition(B_POSITION_PLAYER_LEFT)] = B_ACTION_NOTHING_FAINTED;
+            // if throwing a ball in a wild battle with an in-game partner, skip partner's turn when throwing a ball
+            if (gBattleTypeFlags & BATTLE_TYPE_INGAME_PARTNER)
+                gChosenActionByBattler[GetBattlerAtPosition(B_POSITION_PLAYER_RIGHT)] = B_ACTION_NOTHING_FAINTED;
+            else
+                gChosenActionByBattler[GetBattlerAtPosition(B_POSITION_PLAYER_LEFT)] = B_ACTION_NOTHING_FAINTED;
         }
 
         gBattleMainFunc = SetActionsAndBattlersTurnOrder;
diff --git a/src/battle_message.c b/src/battle_message.c
index 307b539a5c..e0ebf9f1f2 100644
--- a/src/battle_message.c
+++ b/src/battle_message.c
@@ -2698,7 +2698,7 @@ void BufferStringBattle(u16 stringID)
         {
             if (gBattleTypeFlags & BATTLE_TYPE_LEGENDARY)
                 stringPtr = sText_LegendaryPkmnAppeared;
-            else if (gBattleTypeFlags & BATTLE_TYPE_DOUBLE && IsValidForBattle(&gEnemyParty[gBattlerPartyIndexes[BATTLE_PARTNER(gActiveBattler)]])) // interesting, looks like they had something planned for wild double battles
+            else if (gBattleTypeFlags & BATTLE_TYPE_DOUBLE && IsValidForBattle(&gEnemyParty[gBattlerPartyIndexes[GetBattlerAtPosition(B_POSITION_OPPONENT_RIGHT)]]))
                 stringPtr = sText_TwoWildPkmnAppeared;
             else if (gBattleTypeFlags & BATTLE_TYPE_WALLY_TUTORIAL)
                 stringPtr = sText_WildPkmnAppearedPause;
diff --git a/src/battle_util.c b/src/battle_util.c
index 8f981fe3f5..b5fb8732d9 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -3877,14 +3877,15 @@ u8 AtkCanceller_UnableToUseMove2(void)
 
 bool8 HasNoMonsToSwitch(u8 battler, u8 partyIdBattlerOn1, u8 partyIdBattlerOn2)
 {
-    u8 playerId, flankId;
+    u32 i, side, playerId, flankId;
     struct Pokemon *party;
-    s32 i;
 
     if (!(gBattleTypeFlags & BATTLE_TYPE_DOUBLE))
         return FALSE;
 
-    if (BATTLE_TWO_VS_ONE_OPPONENT && GetBattlerSide(battler) == B_SIDE_OPPONENT)
+    side = GetBattlerSide(battler);
+
+    if (BATTLE_TWO_VS_ONE_OPPONENT && side == B_SIDE_OPPONENT)
     {
         flankId = GetBattlerAtPosition(B_POSITION_OPPONENT_LEFT);
         playerId = GetBattlerAtPosition(B_POSITION_OPPONENT_RIGHT);
@@ -3897,9 +3898,7 @@ bool8 HasNoMonsToSwitch(u8 battler, u8 partyIdBattlerOn1, u8 partyIdBattlerOn2)
 
         for (i = 0; i < PARTY_SIZE; i++)
         {
-            if (GetMonData(&party[i], MON_DATA_HP) != 0
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_NONE
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_EGG
+            if (IsValidForBattle(&party[i])
              && i != partyIdBattlerOn1 && i != partyIdBattlerOn2
              && i != *(gBattleStruct->monToSwitchIntoId + flankId) && i != playerId[gBattleStruct->monToSwitchIntoId])
                 break;
@@ -3909,22 +3908,41 @@ bool8 HasNoMonsToSwitch(u8 battler, u8 partyIdBattlerOn1, u8 partyIdBattlerOn2)
     else if (gBattleTypeFlags & BATTLE_TYPE_INGAME_PARTNER)
     {
         party = GetBattlerParty(battler);
-
-        playerId = ((battler & BIT_FLANK) / 2);
-        for (i = playerId * MULTI_PARTY_SIZE; i < playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE; i++)
+        if (side == B_SIDE_OPPONENT && WILD_DOUBLE_BATTLE)
         {
-            if (GetMonData(&party[i], MON_DATA_HP) != 0
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_NONE
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_EGG)
-                break;
+            flankId = GetBattlerAtPosition(B_POSITION_OPPONENT_LEFT);
+            playerId = GetBattlerAtPosition(B_POSITION_OPPONENT_RIGHT);
+
+            if (partyIdBattlerOn1 == PARTY_SIZE)
+                partyIdBattlerOn1 = gBattlerPartyIndexes[flankId];
+            if (partyIdBattlerOn2 == PARTY_SIZE)
+                partyIdBattlerOn2 = gBattlerPartyIndexes[playerId];
+
+            for (i = 0; i < PARTY_SIZE; i++)
+            {
+                if (IsValidForBattle(&party[i])
+                 && i != partyIdBattlerOn1 && i != partyIdBattlerOn2
+                 && i != *(gBattleStruct->monToSwitchIntoId + flankId) && i != playerId[gBattleStruct->monToSwitchIntoId])
+                    break;
+            }
+            return (i == PARTY_SIZE);
+        }
+        else
+        {
+            playerId = ((battler & BIT_FLANK) / 2);
+            for (i = playerId * MULTI_PARTY_SIZE; i < playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE; i++)
+            {
+                if (IsValidForBattle(&party[i]))
+                    break;
+            }
+            return (i == playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE);
         }
-        return (i == playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE);
     }
     else if (gBattleTypeFlags & BATTLE_TYPE_MULTI)
     {
         if (gBattleTypeFlags & BATTLE_TYPE_TOWER_LINK_MULTI)
         {
-            if (GetBattlerSide(battler) == B_SIDE_PLAYER)
+            if (side == B_SIDE_PLAYER)
             {
                 party = gPlayerParty;
                 flankId = GetBattlerMultiplayerId(battler);
@@ -3948,14 +3966,12 @@ bool8 HasNoMonsToSwitch(u8 battler, u8 partyIdBattlerOn1, u8 partyIdBattlerOn2)
 
         for (i = playerId * MULTI_PARTY_SIZE; i < playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE; i++)
         {
-            if (GetMonData(&party[i], MON_DATA_HP) != 0
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_NONE
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_EGG)
+            if (IsValidForBattle(&party[i]))
                 break;
         }
         return (i == playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE);
     }
-    else if ((gBattleTypeFlags & BATTLE_TYPE_TWO_OPPONENTS) && GetBattlerSide(battler) == B_SIDE_OPPONENT)
+    else if ((gBattleTypeFlags & BATTLE_TYPE_TWO_OPPONENTS) && side == B_SIDE_OPPONENT)
     {
         party = gEnemyParty;
 
@@ -3966,16 +3982,14 @@ bool8 HasNoMonsToSwitch(u8 battler, u8 partyIdBattlerOn1, u8 partyIdBattlerOn2)
 
         for (i = playerId; i < playerId + MULTI_PARTY_SIZE; i++)
         {
-            if (GetMonData(&party[i], MON_DATA_HP) != 0
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_NONE
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_EGG)
+            if (IsValidForBattle(&party[i]))
                 break;
         }
         return (i == playerId + 3);
     }
     else
     {
-        if (GetBattlerSide(battler) == B_SIDE_OPPONENT)
+        if (side == B_SIDE_OPPONENT)
         {
             flankId = GetBattlerAtPosition(B_POSITION_OPPONENT_LEFT);
             playerId = GetBattlerAtPosition(B_POSITION_OPPONENT_RIGHT);
@@ -3995,9 +4009,7 @@ bool8 HasNoMonsToSwitch(u8 battler, u8 partyIdBattlerOn1, u8 partyIdBattlerOn2)
 
         for (i = 0; i < PARTY_SIZE; i++)
         {
-            if (GetMonData(&party[i], MON_DATA_HP) != 0
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_NONE
-             && GetMonData(&party[i], MON_DATA_SPECIES_OR_EGG) != SPECIES_EGG
+            if (IsValidForBattle(&party[i])
              && i != partyIdBattlerOn1 && i != partyIdBattlerOn2
              && i != *(gBattleStruct->monToSwitchIntoId + flankId) && i != playerId[gBattleStruct->monToSwitchIntoId])
                 break;
@@ -8000,7 +8012,7 @@ u8 IsMonDisobedient(void)
 
     if (IsBattlerModernFatefulEncounter(gBattlerAttacker)) // only false if illegal Mew or Deoxys
     {
-        if (gBattleTypeFlags & BATTLE_TYPE_INGAME_PARTNER && GetBattlerPosition(gBattlerAttacker) == 2)
+        if (gBattleTypeFlags & BATTLE_TYPE_INGAME_PARTNER && GetBattlerPosition(gBattlerAttacker) == B_POSITION_PLAYER_RIGHT)
             return 0;
         if (gBattleTypeFlags & BATTLE_TYPE_FRONTIER)
             return 0;
diff --git a/src/script_pokemon_util.c b/src/script_pokemon_util.c
old mode 100755
new mode 100644