diff --git a/include/battle.h b/include/battle.h
index c32c03fc550c..f84f13fe86a8 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -973,15 +973,10 @@ struct BattleSpriteData
 struct MonSpritesGfx
 {
     void *firstDecompressed; // ptr to the decompressed sprite of the first Pokémon
-    union {
-        void *ptr[MAX_BATTLERS_COUNT];
-        u8 *byte[MAX_BATTLERS_COUNT];
-    } sprites;
+    u8 *spritesGfx[MAX_BATTLERS_COUNT];
     struct SpriteTemplate templates[MAX_BATTLERS_COUNT];
     struct SpriteFrameImage frameImages[MAX_BATTLERS_COUNT][MAX_MON_PIC_FRAMES];
-    u8 unusedArr[0x80];
     u8 *barFontGfx;
-    void *unusedPtr;
     u16 *buffer;
 };
 
diff --git a/src/battle_anim_effects_3.c b/src/battle_anim_effects_3.c
index d8fd768f6325..ffba3429eb4b 100644
--- a/src/battle_anim_effects_3.c
+++ b/src/battle_anim_effects_3.c
@@ -2368,7 +2368,7 @@ void AnimTask_TransformMon(u8 taskId)
         else
             position = GetBattlerPosition(gBattleAnimAttacker);
 
-        src = gMonSpritesGfxPtr->sprites.ptr[position];
+        src = gMonSpritesGfxPtr->spritesGfx[position];
         dest = animBg.bgTiles;
         CpuCopy32(src, dest, MON_PIC_SIZE);
         LoadBgTiles(1, animBg.bgTiles, 0x800, animBg.tilesOffset);
diff --git a/src/battle_dynamax.c b/src/battle_dynamax.c
index b703676b7371..0357e27d1e77 100644
--- a/src/battle_dynamax.c
+++ b/src/battle_dynamax.c
@@ -637,7 +637,7 @@ void BS_SetMaxMoveEffect(void)
         case MAX_EFFECT_SANDSTORM:
         case MAX_EFFECT_HAIL:
         {
-            u8 weather, msg;
+            u8 weather = 0, msg = 0;
             switch (maxEffect)
             {
                 case MAX_EFFECT_SUN:
diff --git a/src/battle_gfx_sfx_util.c b/src/battle_gfx_sfx_util.c
index 4aaf1b6e8356..31e4dcae2fb1 100644
--- a/src/battle_gfx_sfx_util.c
+++ b/src/battle_gfx_sfx_util.c
@@ -606,13 +606,13 @@ void BattleLoadMonSpriteGfx(struct Pokemon *mon, u32 battler)
     if (GetBattlerSide(battler) == B_SIDE_OPPONENT)
     {
         HandleLoadSpecialPokePic(TRUE,
-                                 gMonSpritesGfxPtr->sprites.ptr[position],
+                                 gMonSpritesGfxPtr->spritesGfx[position],
                                  species, currentPersonality);
     }
     else
     {
         HandleLoadSpecialPokePic(FALSE,
-                                 gMonSpritesGfxPtr->sprites.ptr[position],
+                                 gMonSpritesGfxPtr->spritesGfx[position],
                                  species, currentPersonality);
     }
 
@@ -654,7 +654,7 @@ void DecompressTrainerFrontPic(u16 frontPicId, u8 battler)
 {
     u8 position = GetBattlerPosition(battler);
     DecompressPicFromTable(&gTrainerSprites[frontPicId].frontPic,
-                           gMonSpritesGfxPtr->sprites.ptr[position]);
+                           gMonSpritesGfxPtr->spritesGfx[position]);
     LoadCompressedSpritePalette(&gTrainerSprites[frontPicId].palette);
 }
 
@@ -662,7 +662,7 @@ void DecompressTrainerBackPic(u16 backPicId, u8 battler)
 {
     u8 position = GetBattlerPosition(battler);
     DecompressPicFromTable(&gTrainerBacksprites[backPicId].backPic,
-                           gMonSpritesGfxPtr->sprites.ptr[position]);
+                           gMonSpritesGfxPtr->spritesGfx[position]);
     LoadCompressedPalette(gTrainerBacksprites[backPicId].palette.data,
                           OBJ_PLTT_ID(battler), PLTT_SIZE_4BPP);
 }
@@ -883,7 +883,7 @@ void HandleSpeciesGfxDataChange(u8 battlerAtk, u8 battlerDef, bool32 megaEvo, bo
         isShiny = gContestResources->moveAnim->isShiny;
 
         HandleLoadSpecialPokePic(FALSE,
-                                 gMonSpritesGfxPtr->sprites.ptr[position],
+                                 gMonSpritesGfxPtr->spritesGfx[position],
                                  targetSpecies,
                                  gContestResources->moveAnim->targetPersonality);
     }
@@ -910,7 +910,7 @@ void HandleSpeciesGfxDataChange(u8 battlerAtk, u8 battlerDef, bool32 megaEvo, bo
             }
 
             HandleLoadSpecialPokePic(FALSE,
-                                     gMonSpritesGfxPtr->sprites.ptr[position],
+                                     gMonSpritesGfxPtr->spritesGfx[position],
                                      targetSpecies,
                                      gTransformedPersonalities[battlerAtk]);
         }
@@ -928,12 +928,12 @@ void HandleSpeciesGfxDataChange(u8 battlerAtk, u8 battlerDef, bool32 megaEvo, bo
             }
 
             HandleLoadSpecialPokePic(TRUE,
-                                     gMonSpritesGfxPtr->sprites.ptr[position],
+                                     gMonSpritesGfxPtr->spritesGfx[position],
                                      targetSpecies,
                                      gTransformedPersonalities[battlerAtk]);
         }
     }
-    src = gMonSpritesGfxPtr->sprites.ptr[position];
+    src = gMonSpritesGfxPtr->spritesGfx[position];
     dst = (void *)(OBJ_VRAM0 + gSprites[gBattlerSpriteIds[battlerAtk]].oam.tileNum * 32);
     DmaCopy32(3, src, dst, MON_PIC_SIZE);
     paletteOffset = OBJ_PLTT_ID(battlerAtk);
@@ -961,22 +961,21 @@ void BattleLoadSubstituteOrMonSpriteGfx(u8 battler, bool8 loadMonSprite)
 
     if (!loadMonSprite)
     {
-
         if (IsContest())
             position = B_POSITION_PLAYER_LEFT;
         else
             position = GetBattlerPosition(battler);
 
         if (IsContest())
-            LZDecompressVram(gBattleAnimSpriteGfx_SubstituteBack, gMonSpritesGfxPtr->sprites.ptr[position]);
+            LZDecompressVram(gBattleAnimSpriteGfx_SubstituteBack, gMonSpritesGfxPtr->spritesGfx[position]);
         else if (GetBattlerSide(battler) != B_SIDE_PLAYER)
-            LZDecompressVram(gBattleAnimSpriteGfx_Substitute, gMonSpritesGfxPtr->sprites.ptr[position]);
+            LZDecompressVram(gBattleAnimSpriteGfx_Substitute, gMonSpritesGfxPtr->spritesGfx[position]);
         else
-            LZDecompressVram(gBattleAnimSpriteGfx_SubstituteBack, gMonSpritesGfxPtr->sprites.ptr[position]);
+            LZDecompressVram(gBattleAnimSpriteGfx_SubstituteBack, gMonSpritesGfxPtr->spritesGfx[position]);
 
         for (i = 1; i < 4; i++)
         {
-            Dma3CopyLarge32_(gMonSpritesGfxPtr->sprites.ptr[position], &gMonSpritesGfxPtr->sprites.byte[position][MON_PIC_SIZE * i], MON_PIC_SIZE);
+            Dma3CopyLarge32_(gMonSpritesGfxPtr->spritesGfx[position], &gMonSpritesGfxPtr->spritesGfx[position][MON_PIC_SIZE * i], MON_PIC_SIZE);
         }
 
         palOffset = OBJ_PLTT_ID(battler);
@@ -1217,14 +1216,14 @@ void AllocateMonSpritesGfx(void)
 
     for (i = 0; i < MAX_BATTLERS_COUNT; i++)
     {
-        gMonSpritesGfxPtr->sprites.ptr[i] = gMonSpritesGfxPtr->firstDecompressed + (i * MON_PIC_SIZE * 4);
-        *(gMonSpritesGfxPtr->templates + i) = gBattlerSpriteTemplates[i];
+        gMonSpritesGfxPtr->spritesGfx[i] = gMonSpritesGfxPtr->firstDecompressed + (i * MON_PIC_SIZE * 4);
+        gMonSpritesGfxPtr->templates[i] = gBattlerSpriteTemplates[i];
 
-        for (j = 0; j < 4; j++)
+        for (j = 0; j < MAX_MON_PIC_FRAMES; j++)
         {
-            if (gMonSpritesGfxPtr->sprites.ptr[i])
+            if (gMonSpritesGfxPtr->spritesGfx[i])
             {
-                gMonSpritesGfxPtr->frameImages[i][j].data = gMonSpritesGfxPtr->sprites.ptr[i] + (j * MON_PIC_SIZE);
+                gMonSpritesGfxPtr->frameImages[i][j].data = gMonSpritesGfxPtr->spritesGfx[i] + (j * MON_PIC_SIZE);
                 gMonSpritesGfxPtr->frameImages[i][j].size = MON_PIC_SIZE;
             }
         }
@@ -1241,13 +1240,12 @@ void FreeMonSpritesGfx(void)
         return;
 
     TRY_FREE_AND_SET_NULL(gMonSpritesGfxPtr->buffer);
-    TRY_FREE_AND_SET_NULL(gMonSpritesGfxPtr->unusedPtr);
     FREE_AND_SET_NULL(gMonSpritesGfxPtr->barFontGfx);
     FREE_AND_SET_NULL(gMonSpritesGfxPtr->firstDecompressed);
-    gMonSpritesGfxPtr->sprites.ptr[B_POSITION_PLAYER_LEFT] = NULL;
-    gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT] = NULL;
-    gMonSpritesGfxPtr->sprites.ptr[B_POSITION_PLAYER_RIGHT] = NULL;
-    gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_RIGHT] = NULL;
+    gMonSpritesGfxPtr->spritesGfx[B_POSITION_PLAYER_LEFT] = NULL;
+    gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT] = NULL;
+    gMonSpritesGfxPtr->spritesGfx[B_POSITION_PLAYER_RIGHT] = NULL;
+    gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_RIGHT] = NULL;
     FREE_AND_SET_NULL(gMonSpritesGfxPtr);
 }
 
diff --git a/src/battle_intro.c b/src/battle_intro.c
index 858a32b13bc7..c28ed90ffc22 100644
--- a/src/battle_intro.c
+++ b/src/battle_intro.c
@@ -586,7 +586,7 @@ void DrawBattlerOnBg(int bgId, u8 x, u8 y, u8 battlerPosition, u8 paletteId, u8
 {
     int i, j;
     int offset = tilesOffset;
-    CpuCopy16(gMonSpritesGfxPtr->sprites.ptr[battlerPosition], tiles, BG_SCREEN_SIZE);
+    CpuCopy16(gMonSpritesGfxPtr->spritesGfx[battlerPosition], tiles, BG_SCREEN_SIZE);
     LoadBgTiles(bgId, tiles, 0x1000, tilesOffset);
     for (i = y; i < y + 8; i++)
     {
@@ -603,7 +603,7 @@ static void UNUSED DrawBattlerOnBgDMA(u8 x, u8 y, u8 battlerPosition, u8 arg3, u
 {
     int i, j, offset;
 
-    DmaCopy16(3, gMonSpritesGfxPtr->sprites.ptr[battlerPosition] + BG_SCREEN_SIZE * arg3, (void *)BG_SCREEN_ADDR(0) + arg5, BG_SCREEN_SIZE);
+    DmaCopy16(3, gMonSpritesGfxPtr->spritesGfx[battlerPosition] + BG_SCREEN_SIZE * arg3, (void *)BG_SCREEN_ADDR(0) + arg5, BG_SCREEN_SIZE);
     offset = (arg5 >> 5) - (arg7 << 9);
     for (i = y; i < y + 8; i++)
     {
diff --git a/src/battle_main.c b/src/battle_main.c
index c592eb66883d..f0075340eaba 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -2739,7 +2739,7 @@ static void SpriteCB_AnimFaintOpponent(struct Sprite *sprite)
         }
         else // Erase bottom part of the sprite to create a smooth illusion of mon falling down.
         {
-            u8 *dst = gMonSpritesGfxPtr->sprites.byte[GetBattlerPosition(sprite->sBattler)] + (sprite->data[3] << 8);
+            u8 *dst = &gMonSpritesGfxPtr->spritesGfx[GetBattlerPosition(sprite->sBattler)][(sprite->data[3] << 8)];
 
             for (i = 0; i < 0x100; i++)
                 *(dst++) = 0;
diff --git a/src/battle_util.c b/src/battle_util.c
index 143ebc5144f6..41b10b5d1eef 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -4123,7 +4123,7 @@ u32 AbilityBattleEffects(u32 caseID, u32 battler, u32 ability, u32 special, u32
                 }
                 break;
             }
-            
+
             if (effect == 1)
                 BattleScriptPushCursorAndCallback(BattleScript_OverworldStatusStarts);
             else if (effect == 2)
@@ -4989,7 +4989,7 @@ u32 AbilityBattleEffects(u32 caseID, u32 battler, u32 ability, u32 special, u32
     case ABILITYEFFECT_ABSORBING: // 3
         if (move != MOVE_NONE)
         {
-            u8 statId;
+            u8 statId = 0;
             u8 statAmount = 1;
             switch (gLastUsedAbility)
             {
diff --git a/src/contest.c b/src/contest.c
index ba63b8073af9..f0d0d527ed37 100644
--- a/src/contest.c
+++ b/src/contest.c
@@ -3211,7 +3211,7 @@ static u8 CreateContestantSprite(u16 species, bool8 isShiny, u32 personality, u3
     u8 spriteId;
     species = SanitizeSpecies(species);
 
-    HandleLoadSpecialPokePic(FALSE, gMonSpritesGfxPtr->sprites.ptr[B_POSITION_PLAYER_LEFT], species, personality);
+    HandleLoadSpecialPokePic(FALSE, gMonSpritesGfxPtr->spritesGfx[B_POSITION_PLAYER_LEFT], species, personality);
 
     LoadCompressedPalette(GetMonSpritePalFromSpeciesAndPersonality(species, isShiny, personality), OBJ_PLTT_ID(2), PLTT_SIZE_4BPP);
     SetMultiuseSpriteTemplateToPokemon(species, B_POSITION_PLAYER_LEFT);
diff --git a/src/contest_painting.c b/src/contest_painting.c
index 529330a5228f..922b8785314f 100644
--- a/src/contest_painting.c
+++ b/src/contest_painting.c
@@ -368,18 +368,18 @@ static void InitContestMonPixels(u16 species, bool8 backPic)
     if (!backPic)
     {
         HandleLoadSpecialPokePic(TRUE,
-                                gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT],
+                                gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT],
                                 species,
                                 gContestPaintingWinner->personality);
-        _InitContestMonPixels(gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT], gContestPaintingMonPalette, (void *)gContestMonPixels);
+        _InitContestMonPixels(gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT], gContestPaintingMonPalette, (void *)gContestMonPixels);
     }
     else
     {
         HandleLoadSpecialPokePic(FALSE,
-                                gMonSpritesGfxPtr->sprites.ptr[B_POSITION_PLAYER_LEFT],
+                                gMonSpritesGfxPtr->spritesGfx[B_POSITION_PLAYER_LEFT],
                                 species,
                                 gContestPaintingWinner->personality);
-        _InitContestMonPixels(gMonSpritesGfxPtr->sprites.ptr[B_POSITION_PLAYER_LEFT], gContestPaintingMonPalette, (void *)gContestMonPixels);
+        _InitContestMonPixels(gMonSpritesGfxPtr->spritesGfx[B_POSITION_PLAYER_LEFT], gContestPaintingMonPalette, (void *)gContestMonPixels);
     }
 }
 
diff --git a/src/contest_util.c b/src/contest_util.c
index 7de492303722..7977f373c165 100644
--- a/src/contest_util.c
+++ b/src/contest_util.c
@@ -893,7 +893,7 @@ static void Task_ShowWinnerMonBanner(u8 taskId)
         personality = gContestMons[i].personality;
         isShiny = gContestMons[i].isShiny;
         HandleLoadSpecialPokePic(TRUE,
-                                gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT],
+                                gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT],
                                 species,
                                 personality);
 
@@ -2570,7 +2570,7 @@ void ShowContestEntryMonPic(void)
         taskId = CreateTask(Task_ShowContestEntryMonPic, 0x50);
         gTasks[taskId].data[0] = 0;
         gTasks[taskId].data[1] = species;
-        HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT], species, personality);
+        HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT], species, personality);
 
         LoadCompressedSpritePaletteWithTag(GetMonSpritePalFromSpeciesAndPersonality(species, isShiny, personality), species);
         SetMultiuseSpriteTemplateToPokemon(species, B_POSITION_OPPONENT_LEFT);
diff --git a/src/egg_hatch.c b/src/egg_hatch.c
index abb7ca4e15cb..588563d5d200 100644
--- a/src/egg_hatch.c
+++ b/src/egg_hatch.c
@@ -442,7 +442,7 @@ static u8 EggHatchCreateMonSprite(u8 useAlt, u8 state, u8 partyId, u16 *speciesL
         {
             u32 pid = GetMonData(mon, MON_DATA_PERSONALITY);
             HandleLoadSpecialPokePic(TRUE,
-                                     gMonSpritesGfxPtr->sprites.ptr[(useAlt * 2) + B_POSITION_OPPONENT_LEFT],
+                                     gMonSpritesGfxPtr->spritesGfx[(useAlt * 2) + B_POSITION_OPPONENT_LEFT],
                                      species, pid);
             LoadCompressedSpritePaletteWithTag(GetMonFrontSpritePal(mon), species);
             *speciesLoc = species;
diff --git a/src/evolution_scene.c b/src/evolution_scene.c
index b254dab42ac7..c5d7e56f0bf6 100644
--- a/src/evolution_scene.c
+++ b/src/evolution_scene.c
@@ -258,7 +258,7 @@ void EvolutionScene(struct Pokemon *mon, u16 postEvoSpecies, bool8 canStopEvo, u
     currSpecies = GetMonData(mon, MON_DATA_SPECIES);
     isShiny = GetMonData(mon, MON_DATA_IS_SHINY);
     personality = GetMonData(mon, MON_DATA_PERSONALITY);
-    LoadSpecialPokePic(gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT],
+    LoadSpecialPokePic(gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT],
                         currSpecies,
                         personality,
                         TRUE);
@@ -273,7 +273,7 @@ void EvolutionScene(struct Pokemon *mon, u16 postEvoSpecies, bool8 canStopEvo, u
     gSprites[id].invisible = TRUE;
 
     // postEvo sprite
-    LoadSpecialPokePic(gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_RIGHT],
+    LoadSpecialPokePic(gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_RIGHT],
                         postEvoSpecies,
                         personality,
                         TRUE);
@@ -350,7 +350,7 @@ static void CB2_EvolutionSceneLoadGraphics(void)
     FreeAllSpritePalettes();
     gReservedSpritePaletteCount = 4;
 
-    LoadSpecialPokePic(gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_RIGHT],
+    LoadSpecialPokePic(gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_RIGHT],
                         postEvoSpecies,
                         personality,
                         TRUE);
@@ -420,7 +420,7 @@ static void CB2_TradeEvolutionSceneLoadGraphics(void)
         {
             bool8 isShiny = GetMonData(mon, MON_DATA_IS_SHINY);
             u32 personality = GetMonData(mon, MON_DATA_PERSONALITY);
-            LoadSpecialPokePic(gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_RIGHT],
+            LoadSpecialPokePic(gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_RIGHT],
                                 postEvoSpecies,
                                 personality,
                                 TRUE);
@@ -484,7 +484,7 @@ void TradeEvolutionScene(struct Pokemon *mon, u16 postEvoSpecies, u8 preEvoSprit
     sEvoStructPtr = AllocZeroed(sizeof(struct EvoInfo));
     sEvoStructPtr->preEvoSpriteId = preEvoSpriteId;
 
-    LoadSpecialPokePic(gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT],
+    LoadSpecialPokePic(gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT],
                         postEvoSpecies,
                         personality,
                         TRUE);
diff --git a/src/librfu_sio32id.c b/src/librfu_sio32id.c
index 1c02840e85d1..4f49fbd1b4c3 100644
--- a/src/librfu_sio32id.c
+++ b/src/librfu_sio32id.c
@@ -24,7 +24,7 @@ s32 AgbRFU_checkID(u8 maxTries)
 {
     u16 ieBak;
     vu16 *regTMCNTL;
-    s32 id;
+    s32 id = 0;
 
     // Interrupts must be enabled
     if (REG_IME == 0)
diff --git a/src/option_menu.c b/src/option_menu.c
index af10b75a20ef..273353c22b99 100644
--- a/src/option_menu.c
+++ b/src/option_menu.c
@@ -545,7 +545,7 @@ static u8 FrameType_ProcessInput(u8 selection)
 
 static void FrameType_DrawChoices(u8 selection)
 {
-    u8 text[16];
+    u8 text[16] = {EOS};
     u8 n = selection + 1;
     u16 i;
 
diff --git a/src/palette_util.c b/src/palette_util.c
old mode 100755
new mode 100644
diff --git a/src/pokeblock_feed.c b/src/pokeblock_feed.c
index 61e1b7a6b366..59aed379d8aa 100644
--- a/src/pokeblock_feed.c
+++ b/src/pokeblock_feed.c
@@ -727,7 +727,7 @@ static bool8 LoadMonAndSceneGfx(struct Pokemon *mon)
         // Load mon gfx
         species = GetMonData(mon, MON_DATA_SPECIES_OR_EGG);
         personality = GetMonData(mon, MON_DATA_PERSONALITY);
-        HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT], species, personality);
+        HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT], species, personality);
         sPokeblockFeed->loadGfxState++;
         break;
     case 1:
diff --git a/src/pokemon.c b/src/pokemon.c
index 4268515b6586..9bb8772af27a 100644
--- a/src/pokemon.c
+++ b/src/pokemon.c
@@ -1643,7 +1643,7 @@ static void SetMonMoveSlot_KeepPP(struct Pokemon *mon, u16 move, u8 slot)
     u8 ppBonuses = GetMonData(mon, MON_DATA_PP_BONUSES, NULL);
     u8 currPP = GetMonData(mon, MON_DATA_PP1 + slot, NULL);
     u8 newPP = CalculatePPWithBonus(move, ppBonuses, slot);
-    u8 finalPP = min(currPP, newPP);
+    u16 finalPP = min(currPP, newPP);
 
     SetMonData(mon, MON_DATA_MOVE1 + slot, &move);
     SetMonData(mon, MON_DATA_PP1 + slot, &finalPP);
@@ -5607,7 +5607,7 @@ static inline bool32 CanFirstMonBoostHeldItemRarity(void)
     u32 ability;
     if (GetMonData(&gPlayerParty[0], MON_DATA_SANITY_IS_EGG))
         return FALSE;
-    
+
     ability = GetMonAbility(&gPlayerParty[0]);
     if ((OW_COMPOUND_EYES < GEN_9) && ability == ABILITY_COMPOUND_EYES)
         return TRUE;
diff --git a/src/pokemon_debug.c b/src/pokemon_debug.c
index f34afe278dc5..3f2291141744 100644
--- a/src/pokemon_debug.c
+++ b/src/pokemon_debug.c
@@ -1114,7 +1114,7 @@ void CB2_Debug_Pokemon(void)
             palette = GetMonSpritePalStructCustom(species, data->isFemale, data->isShiny);
             LoadCompressedSpritePaletteWithTag(palette, species);
             //Front
-            HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->sprites.ptr[1], species, (data->isFemale ? FEMALE_PERSONALITY : MALE_PERSONALITY));
+            HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->spritesGfx[1], species, (data->isFemale ? FEMALE_PERSONALITY : MALE_PERSONALITY));
             data->isShiny = FALSE;
             data->isFemale = FALSE;
             BattleLoadOpponentMonSpriteGfxCustom(species, data->isFemale, data->isShiny, 1);
@@ -1129,7 +1129,7 @@ void CB2_Debug_Pokemon(void)
             LoadAndCreateEnemyShadowSpriteCustom(data, species);
 
             //Back
-            HandleLoadSpecialPokePic(FALSE, gMonSpritesGfxPtr->sprites.ptr[2], species, (data->isFemale ? FEMALE_PERSONALITY : MALE_PERSONALITY));
+            HandleLoadSpecialPokePic(FALSE, gMonSpritesGfxPtr->spritesGfx[2], species, (data->isFemale ? FEMALE_PERSONALITY : MALE_PERSONALITY));
             BattleLoadOpponentMonSpriteGfxCustom(species, data->isFemale, data->isShiny, 4);
             SetMultiuseSpriteTemplateToPokemon(species, 2);
             offset_y = gSpeciesInfo[species].backPicYOffset;
@@ -1666,7 +1666,7 @@ static void ReloadPokemonSprites(struct PokemonDebugMenu *data)
     palette = GetMonSpritePalStructCustom(species, data->isFemale, data->isShiny);
     LoadCompressedSpritePaletteWithTag(palette, species);
     //Front
-    HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->sprites.ptr[1], species, (data->isFemale ? FEMALE_PERSONALITY : MALE_PERSONALITY));
+    HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->spritesGfx[1], species, (data->isFemale ? FEMALE_PERSONALITY : MALE_PERSONALITY));
     BattleLoadOpponentMonSpriteGfxCustom(species, data->isFemale, data->isShiny, 1);
     SetMultiuseSpriteTemplateToPokemon(species, 1);
     gMultiuseSpriteTemplate.paletteTag = species;
@@ -1679,7 +1679,7 @@ static void ReloadPokemonSprites(struct PokemonDebugMenu *data)
     LoadAndCreateEnemyShadowSpriteCustom(data, species);
 
     //Back
-    HandleLoadSpecialPokePic(FALSE, gMonSpritesGfxPtr->sprites.ptr[2], species, (data->isFemale ? FEMALE_PERSONALITY : MALE_PERSONALITY));
+    HandleLoadSpecialPokePic(FALSE, gMonSpritesGfxPtr->spritesGfx[2], species, (data->isFemale ? FEMALE_PERSONALITY : MALE_PERSONALITY));
     BattleLoadOpponentMonSpriteGfxCustom(species, data->isFemale, data->isShiny, 5);
     SetMultiuseSpriteTemplateToPokemon(species, 2);
     offset_y = gSpeciesInfo[species].backPicYOffset;
diff --git a/src/pokemon_storage_system.c b/src/pokemon_storage_system.c
index 2fa88b4db59c..8f981ed8545b 100644
--- a/src/pokemon_storage_system.c
+++ b/src/pokemon_storage_system.c
@@ -5987,7 +5987,7 @@ static bool8 UpdateCursorPos(void)
 
 static void InitNewCursorPos(u8 newCursorArea, u8 newCursorPosition)
 {
-    u16 x, y;
+    u16 x = 0, y = 0;
 
     GetCursorCoordsByPos(newCursorArea, newCursorPosition, &x, &y);
     sStorage->newCursorArea = newCursorArea;
diff --git a/src/pokemon_summary_screen.c b/src/pokemon_summary_screen.c
index ca84d5b390c7..e3850e6b4e55 100644
--- a/src/pokemon_summary_screen.c
+++ b/src/pokemon_summary_screen.c
@@ -4026,7 +4026,7 @@ static u8 LoadMonGfxAndSprite(struct Pokemon *mon, s16 *state)
         if (gMain.inBattle)
         {
             HandleLoadSpecialPokePic(TRUE,
-                                     gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT],
+                                     gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT],
                                      summary->species2,
                                      summary->pid);
         }
@@ -4035,7 +4035,7 @@ static u8 LoadMonGfxAndSprite(struct Pokemon *mon, s16 *state)
             if (gMonSpritesGfxPtr != NULL)
             {
                 HandleLoadSpecialPokePic(TRUE,
-                                         gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_LEFT],
+                                         gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_LEFT],
                                          summary->species2,
                                          summary->pid);
             }
diff --git a/src/secret_base.c b/src/secret_base.c
index a662acb36ef8..264cd9435a5a 100644
--- a/src/secret_base.c
+++ b/src/secret_base.c
@@ -470,7 +470,7 @@ static void EnterNewlyCreatedSecretBase_WaitFadeIn(u8 taskId)
 
 static void EnterNewlyCreatedSecretBase_StartFadeIn(void)
 {
-    s16 x, y;
+    s16 x = 0, y = 0;
 
     LockPlayerFieldControls();
     HideMapNamePopUpWindow();
@@ -519,7 +519,7 @@ bool8 CurMapIsSecretBase(void)
 void InitSecretBaseAppearance(bool8 hidePC)
 {
     u16 secretBaseIdx;
-    s16 x, y;
+    s16 x, y = 0;
     u8 *decorations;
     u8 *decorPos;
 
diff --git a/src/trade.c b/src/trade.c
index d3345cb06e93..04b1977c17b0 100644
--- a/src/trade.c
+++ b/src/trade.c
@@ -2788,7 +2788,7 @@ static void LoadTradeMonPic(u8 whichParty, u8 state)
     case 0:
         personality = GetMonData(mon, MON_DATA_PERSONALITY);
 
-        HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->sprites.ptr[whichParty * 2 + B_POSITION_OPPONENT_LEFT], species, personality);
+        HandleLoadSpecialPokePic(TRUE, gMonSpritesGfxPtr->spritesGfx[whichParty * 2 + B_POSITION_OPPONENT_LEFT], species, personality);
 
         LoadCompressedSpritePaletteWithTag(GetMonFrontSpritePal(mon), species);
         sTradeAnim->monSpecies[whichParty] = species;
@@ -3784,7 +3784,7 @@ static bool8 DoTradeAnim_Cable(void)
         if (gSprites[sTradeAnim->bouncingPokeballSpriteId].callback == SpriteCallbackDummy)
         {
             HandleLoadSpecialPokePic(TRUE,
-                                     gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_RIGHT],
+                                     gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_RIGHT],
                                      sTradeAnim->monSpecies[TRADE_PARTNER],
                                      sTradeAnim->monPersonalities[TRADE_PARTNER]);
             sTradeAnim->state++;
@@ -4281,7 +4281,7 @@ static bool8 DoTradeAnim_Wireless(void)
         if (gSprites[sTradeAnim->bouncingPokeballSpriteId].callback == SpriteCallbackDummy)
         {
             HandleLoadSpecialPokePic(TRUE,
-                                      gMonSpritesGfxPtr->sprites.ptr[B_POSITION_OPPONENT_RIGHT],
+                                      gMonSpritesGfxPtr->spritesGfx[B_POSITION_OPPONENT_RIGHT],
                                       sTradeAnim->monSpecies[TRADE_PARTNER],
                                       sTradeAnim->monPersonalities[TRADE_PARTNER]);
             sTradeAnim->state++;