diff --git a/src/battle_anim.c b/src/battle_anim.c
index 3cac9f33e5..ab1e5ed6a8 100644
--- a/src/battle_anim.c
+++ b/src/battle_anim.c
@@ -1841,7 +1841,7 @@ void LaunchBattleAnimation(const u8 *const animsTable[], u16 tableId, bool8 isMo
         UpdateOamPriorityInAllHealthboxes(0);
         for (i = 0; i < MAX_BATTLERS_COUNT; i++)
         {
-            if (GetBattlerSide(i) != 0)
+            if (GetBattlerSide(i) != B_SIDE_PLAYER)
                 gAnimBattlerSpecies[i] = GetMonData(&gEnemyParty[gBattlerPartyIndexes[i]], MON_DATA_SPECIES);
             else
                 gAnimBattlerSpecies[i] = GetMonData(&gPlayerParty[gBattlerPartyIndexes[i]], MON_DATA_SPECIES);
diff --git a/src/battle_anim_effects_1.c b/src/battle_anim_effects_1.c
index dfe5f0f3dc..db9057cb4e 100644
--- a/src/battle_anim_effects_1.c
+++ b/src/battle_anim_effects_1.c
@@ -3560,7 +3560,7 @@ void sub_8100640(struct Sprite* sprite)
     else
         battler = gBattleAnimTarget;
 
-    if (GetBattlerSide(battler) != 0)
+    if (GetBattlerSide(battler) != B_SIDE_PLAYER)
     {
         sprite->data[4] = 0;
         sprite->data[2] = gBattleAnimArgs[3];
@@ -3731,7 +3731,7 @@ static void sub_81009DC(struct Sprite* sprite)
 
 void sub_81009F8(struct Sprite* sprite)
 {
-    if (GetBattlerSide(gBattleAnimAttacker) != 0)
+    if (GetBattlerSide(gBattleAnimAttacker) != B_SIDE_PLAYER)
     {
         sprite->pos1.x -= gBattleAnimArgs[0];
         sprite->pos1.y += gBattleAnimArgs[1];
@@ -3828,7 +3828,7 @@ void sub_8100B88(struct Sprite* sprite)
 
     sprite->pos1.x = a;
     sprite->pos1.y = b;
-    if (GetBattlerSide(gBattleAnimTarget) == 0)
+    if (GetBattlerSide(gBattleAnimTarget) == B_SIDE_PLAYER)
         sprite->pos1.y += 8;
 
     sprite->callback = AnimSliceStep;
diff --git a/src/battle_anim_effects_2.c b/src/battle_anim_effects_2.c
index 3b7d26aab7..c443a5c015 100755
--- a/src/battle_anim_effects_2.c
+++ b/src/battle_anim_effects_2.c
@@ -1479,7 +1479,7 @@ void AnimSonicBoomProjectile(struct Sprite *sprite)
     {
         gBattleAnimArgs[2] = -gBattleAnimArgs[2];
     }
-    else if (GetBattlerSide(gBattleAnimAttacker) != 0)
+    else if (GetBattlerSide(gBattleAnimAttacker) != B_SIDE_PLAYER)
     {
         gBattleAnimArgs[2] = -gBattleAnimArgs[2];
         gBattleAnimArgs[1] = -gBattleAnimArgs[1];
diff --git a/src/battle_main.c b/src/battle_main.c
index 665b4c1ab2..ef630988f8 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -5592,7 +5592,7 @@ static void HandleAction_UseItem(void)
             else
             {
                 PREPARE_STAT_BUFFER(gBattleTextBuff1, STAT_ATK)
-                PREPARE_STRING_BUFFER(gBattleTextBuff2, 0xD2)
+                PREPARE_STRING_BUFFER(gBattleTextBuff2, CHAR_X)
 
                 while (!((*(gBattleStruct->AI_itemFlags + (gBattlerAttacker >> 1))) & 1))
                 {
diff --git a/src/fire.c b/src/fire.c
index 2998d46ca8..f87a9e4bb6 100644
--- a/src/fire.c
+++ b/src/fire.c
@@ -949,7 +949,7 @@ static u16 sub_8109930(u8 spriteId)
 {
     u16 var1 = gSprites[spriteId].pos1.y + gSprites[spriteId].pos2.y + gSprites[spriteId].centerToCornerVecY;
 
-    if (GetBattlerSide(gBattleAnimAttacker) == 0)
+    if (GetBattlerSide(gBattleAnimAttacker) == B_SIDE_PLAYER)
     {
         var1 = ((var1 << 16) + 0x4A0000) >> 16;
     }
@@ -1059,7 +1059,7 @@ static void sub_8109AFC(struct Sprite *sprite)
         StartSpriteAnim(sprite, gBattleAnimArgs[2]);
         sprite->data[7] = gBattleAnimArgs[2];
 
-        if (GetBattlerSide(gBattleAnimAttacker) != 0)
+        if (GetBattlerSide(gBattleAnimAttacker) != B_SIDE_PLAYER)
         {
             sprite->data[4] = 4;
         }
@@ -1073,7 +1073,7 @@ static void sub_8109AFC(struct Sprite *sprite)
         break;
     case 1:
         sprite->data[1] += 192;
-        if (GetBattlerSide(gBattleAnimAttacker) != 0)
+        if (GetBattlerSide(gBattleAnimAttacker) != B_SIDE_PLAYER)
         {
             sprite->pos2.y = -(sprite->data[1] >> 8);
         }
@@ -1181,7 +1181,7 @@ void sub_8109DBC(u8 taskId)
 {
     struct Task *task = &gTasks[taskId];
 
-    task->data[12] = !GetBattlerSide(gBattleAnimAttacker) ? 1 : -1;
+    task->data[12] = !GetBattlerSide(gBattleAnimAttacker) ? B_SIDE_OPPONENT : -1;
     task->data[13] = IsBattlerSpriteVisible(gBattleAnimTarget ^ 2) + 1;
     task->data[14] = GetAnimBattlerSpriteId(1);
     task->data[15] = GetAnimBattlerSpriteId(3);
diff --git a/src/ice.c b/src/ice.c
index 8f0c97d821..4dbf5c4dfb 100644
--- a/src/ice.c
+++ b/src/ice.c
@@ -735,7 +735,7 @@ void AnimSwirlingSnowball_Step2(struct Sprite *sprite)
 void AnimSwirlingSnowball_Step3(struct Sprite *sprite)
 {
     s16 tempVar;
-    tempVar = GetBattlerSide(gBattleAnimAttacker) != 0 ? 20 : -20;
+    tempVar = GetBattlerSide(gBattleAnimAttacker) != B_SIDE_PLAYER ? 20 : -20;
 
     if (sprite->data[5] <= 31)
     {