diff --git a/gflib/string_util.c b/gflib/string_util.c
index 446fea482..ff1581fc1 100644
--- a/gflib/string_util.c
+++ b/gflib/string_util.c
@@ -4,11 +4,11 @@
 #include "strings.h"
 #include "union_room_chat.h"
 
-EWRAM_DATA u8 gStringVar1[32] = {};
-EWRAM_DATA u8 gStringVar2[20] = {};
-EWRAM_DATA u8 gStringVar3[20] = {};
+EWRAM_DATA u8 gStringVar1[256] = {};
+EWRAM_DATA u8 gStringVar2[256] = {};
+EWRAM_DATA u8 gStringVar3[256] = {};
 EWRAM_DATA u8 gStringVar4[1000] = {};
-EWRAM_DATA u8 gUnknownStringVar[16] = {0};
+EWRAM_DATA static u8 gUnknownStringVar[16] = {0};
 
 static const u8 sDigits[] = __("0123456789ABCDEF");
 
diff --git a/include/battle_main.h b/include/battle_main.h
index 7ed3876b8..cb03605c9 100644
--- a/include/battle_main.h
+++ b/include/battle_main.h
@@ -43,7 +43,6 @@ struct MultiPartnerMenuPokemon
 #define BOUNCE_MON          0x0
 #define BOUNCE_HEALTHBOX    0x1
 
-extern const struct SpriteTemplate gUnknownDebugSprite;
 extern const struct OamData gOamData_BattlerOpponent;
 extern const struct OamData gOamData_BattlerPlayer;
 extern const u8 gStatusConditionString_PoisonJpn[8];
diff --git a/include/battle_message.h b/include/battle_message.h
index dd4207ed6..6409a99ee 100644
--- a/include/battle_message.h
+++ b/include/battle_message.h
@@ -234,7 +234,7 @@ extern struct BattleMsgData *gBattleMsgDataPtr;
 
 #define TEXT_BUFF_ARRAY_COUNT   16
 
-extern u8 gDisplayedStringBattle[490];
+extern u8 gDisplayedStringBattle[478];
 extern u8 gBattleTextBuff1[TEXT_BUFF_ARRAY_COUNT];
 extern u8 gBattleTextBuff2[TEXT_BUFF_ARRAY_COUNT];
 extern u8 gBattleTextBuff3[TEXT_BUFF_ARRAY_COUNT + 13];
diff --git a/src/battle_anim_effects_1.c b/src/battle_anim_effects_1.c
index b1cec2cc2..80984e80a 100644
--- a/src/battle_anim_effects_1.c
+++ b/src/battle_anim_effects_1.c
@@ -12,12 +12,6 @@
 #include "constants/abilities.h"
 #include "constants/songs.h"
 
-struct {
-    s16 startX;
-    s16 startY;
-    s16 targetX;
-    s16 targetY;
-} static EWRAM_DATA sFrenzyPlantRootData = {0}; // Debug? Written to but never read.
 
 static void AnimMovePowderParticle(struct Sprite *);
 static void AnimMovePowderParticle_Step(struct Sprite *);
@@ -2991,10 +2985,6 @@ static void AnimFrenzyPlantRoot(struct Sprite *sprite)
     StartSpriteAnim(sprite, gBattleAnimArgs[4]);
     sprite->data[2] = gBattleAnimArgs[5];
     sprite->callback = AnimRootFlickerOut;
-    sFrenzyPlantRootData.startX = sprite->x;
-    sFrenzyPlantRootData.startY = sprite->y;
-    sFrenzyPlantRootData.targetX = targetX;
-    sFrenzyPlantRootData.targetY = targetY;
 }
 
 static void AnimRootFlickerOut(struct Sprite* sprite)
diff --git a/src/battle_bg.c b/src/battle_bg.c
index 04d78021f..5adc23217 100644
--- a/src/battle_bg.c
+++ b/src/battle_bg.c
@@ -26,11 +26,8 @@ struct BattleBackground
     const void *palette;
 };
 
-static void CB2_unused(void);
 static u8 GetBattleTerrainOverride(void);
 
-static const u8 sUnused[] = {1, 2};
-
 static const struct OamData sVsLetter_V_OamData = {
     .y = 0,
     .affineMode = ST_OAM_AFFINE_DOUBLE,
@@ -614,23 +611,6 @@ static const struct {
     {MAP_BATTLE_SCENE_LINK,     BATTLE_TERRAIN_LINK}
 };
 
-// Unused
-void CreateUnknownDebugSprite(void)
-{
-    u8 spriteId;
-
-    ResetSpriteData();
-    spriteId = CreateSprite(&gUnknownDebugSprite, 0, 0, 0);
-    gSprites[spriteId].invisible = TRUE;
-    SetMainCallback2(CB2_unused);
-}
-
-static void CB2_unused(void)
-{
-    AnimateSprites();
-    BuildOamBuffer();
-}
-
 static u8 GetBattleTerrainByMapScene(u8 mapBattleScene)
 {
     int i;
diff --git a/src/battle_main.c b/src/battle_main.c
index 290211c18..01187d1dc 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -48,7 +48,6 @@
 #include "constants/songs.h"
 #include "constants/trainers.h"
 
-static void SpriteCB_UnusedDebugSprite(struct Sprite *sprite);
 static void HandleEndTurn_ContinueBattle(void);
 static void HandleEndTurn_BattleWon(void);
 static void HandleEndTurn_BattleLost(void);
@@ -63,7 +62,6 @@ static void CB2_HandleStartBattle(void);
 static void TryCorrectShedinjaLanguage(struct Pokemon *mon);
 static void BattleMainCB1(void);
 static void CB2_QuitPokedudeBattle(void);
-static void SpriteCB_UnusedDebugSprite_Step(struct Sprite *sprite);
 static void CB2_EndLinkBattle(void);
 static void EndLinkBattleInSteps(void);
 static void SpriteCB_MoveWildMonToRight(struct Sprite *sprite);
@@ -103,7 +101,7 @@ EWRAM_DATA u16 gBattle_WIN0H = 0;
 EWRAM_DATA u16 gBattle_WIN0V = 0;
 EWRAM_DATA u16 gBattle_WIN1H = 0;
 EWRAM_DATA u16 gBattle_WIN1V = 0;
-EWRAM_DATA u8 gDisplayedStringBattle[490] = {0};    // Increased in size to fit Brock's defeat text, which is 477 characters long (PewterCity_Gym_Text_BrockDefeat)
+EWRAM_DATA u8 gDisplayedStringBattle[478] = {0};    // Increased in size to fit Brock's defeat text, which is 477 characters long (PewterCity_Gym_Text_BrockDefeat)
 EWRAM_DATA u8 gBattleTextBuff1[TEXT_BUFF_ARRAY_COUNT] = {0};
 EWRAM_DATA u8 gBattleTextBuff2[TEXT_BUFF_ARRAY_COUNT] = {0};
 EWRAM_DATA u8 gBattleTextBuff3[TEXT_BUFF_ARRAY_COUNT + 13] = {0};   // expanded for stupidly long z move names
@@ -112,7 +110,6 @@ EWRAM_DATA u8 gBattleTerrain = 0;
 EWRAM_DATA struct MultiPartnerMenuPokemon gMultiPartnerParty[MULTI_PARTY_SIZE] = {0};
 EWRAM_DATA u8 *gBattleAnimBgTileBuffer = NULL;
 EWRAM_DATA u8 *gBattleAnimBgTilemapBuffer = NULL;
-static EWRAM_DATA u16 *sUnknownDebugSpriteDataBuffer = NULL;
 EWRAM_DATA u32 gBattleControllerExecFlags = 0;
 EWRAM_DATA u8 gBattlersCount = 0;
 EWRAM_DATA u16 gBattlerPartyIndexes[MAX_BATTLERS_COUNT] = {0};
@@ -142,7 +139,6 @@ EWRAM_DATA u8 gAbsentBattlerFlags = 0;
 EWRAM_DATA u8 gCritMultiplier = 0;
 EWRAM_DATA u8 gMultiHitCounter = 0;
 EWRAM_DATA const u8 *gBattlescriptCurrInstr = NULL;
-EWRAM_DATA u32 gUnusedBattleMainVar = 0;
 EWRAM_DATA u8 gChosenActionByBattler[MAX_BATTLERS_COUNT] = {0};
 EWRAM_DATA const u8 *gSelectionBattleScripts[MAX_BATTLERS_COUNT] = {NULL};
 EWRAM_DATA u16 gLastPrintedMoves[MAX_BATTLERS_COUNT] = {0};
@@ -220,17 +216,6 @@ static const struct ScanlineEffectParams sIntroScanlineParams16Bit =
     &REG_BG3HOFS, SCANLINE_EFFECT_DMACNT_16BIT, 1
 };
 
-const struct SpriteTemplate gUnknownDebugSprite =
-{
-    .tileTag = 0,
-    .paletteTag = 0,
-    .oam = &gDummyOamData,
-    .anims = gDummySpriteAnimTable,
-    .images = NULL,
-    .affineAnims = gDummySpriteAffineAnimTable,
-    .callback = SpriteCB_UnusedDebugSprite,
-};
-
 static const u8 sText_ShedinjaJpnName[] = _("ヌケニン"); // Nukenin
 
 const struct OamData gOamData_BattlerOpponent =
@@ -1727,58 +1712,6 @@ static void CB2_QuitPokedudeBattle(void)
     }
 }
 
-static void SpriteCB_UnusedDebugSprite(struct Sprite *sprite)
-{
-    sprite->data[0] = 0;
-    sprite->callback = SpriteCB_UnusedDebugSprite_Step;
-}
-
-static void SpriteCB_UnusedDebugSprite_Step(struct Sprite *sprite)
-{
-    switch (sprite->data[0])
-    {
-    case 0:
-        sUnknownDebugSpriteDataBuffer = AllocZeroed(0x1000);
-        ++sprite->data[0];
-        sprite->data[1] = 0;
-        sprite->data[2] = 0x281;
-        sprite->data[3] = 0;
-        sprite->data[4] = 1;
-        // fall through
-    case 1:
-        if (--sprite->data[4] == 0)
-        {
-            s32 i, r2, r0;
-
-            sprite->data[4] = 2;
-            r2 = sprite->data[1] + sprite->data[3] * 32;
-            r0 = sprite->data[2] - sprite->data[3] * 32;
-            for (i = 0; i <= 29; i += 2)
-            {
-                *(&sUnknownDebugSpriteDataBuffer[r2] + i) = 0x3D;
-                *(&sUnknownDebugSpriteDataBuffer[r0] + i) = 0x3D;
-            }
-            if (++sprite->data[3] == 21)
-            {
-                ++sprite->data[0];
-                sprite->data[1] = 32;
-            }
-        }
-        break;
-    case 2:
-        if (--sprite->data[1] == 20)
-        {
-            if (sUnknownDebugSpriteDataBuffer != NULL)
-            {
-                memset(sUnknownDebugSpriteDataBuffer, 0, 0x1000);
-                FREE_AND_SET_NULL(sUnknownDebugSpriteDataBuffer);
-            }
-            SetMainCallback2(CB2_InitBattle);
-        }
-        break;
-    }
-}
-
 static u32 Crc32B (const u8 *data, u32 size)
 {
    s32 i, j;