diff --git a/include/battle/ov16_0226871C.h b/include/battle/ov16_0226871C.h
index 7b2a3fbd1d..1de6da8f30 100644
--- a/include/battle/ov16_0226871C.h
+++ b/include/battle/ov16_0226871C.h
@@ -2,7 +2,6 @@
 #define POKEPLATINUM_OV16_0226871C_H
 
 #include "struct_decls/battle_system.h"
-#include "struct_defs/struct_0209C370.h"
 
 #include "battle/struct_ov16_02268A14_decl.h"
 #include "battle/struct_ov16_0226AC98.h"
@@ -12,7 +11,7 @@
 
 void ov16_02268744(BgConfig *param0);
 void ov16_022687A0(BgConfig *param0);
-void *ov16_022687C8(NARC *param0, NARC *param1, BattleSystem *param2, int param3, UnkStruct_0209C370 *param4);
+void *ov16_022687C8(NARC *param0, NARC *param1, BattleSystem *param2, int param3, u8 *param4);
 void ov16_02268A14(UnkStruct_ov16_02268A14 *param0);
 void ov16_02268A88(UnkStruct_ov16_02268A14 *param0);
 void ov16_02268B8C(UnkStruct_ov16_02268A14 *param0);
diff --git a/include/field/field_system.h b/include/field/field_system.h
index 6c1eb8b0bc..66c52da74e 100644
--- a/include/field/field_system.h
+++ b/include/field/field_system.h
@@ -13,7 +13,6 @@
 #include "struct_defs/map_load_mode.h"
 #include "struct_defs/struct_0202610C.h"
 #include "struct_defs/struct_0204AFC4.h"
-#include "struct_defs/struct_0209C370.h"
 
 #include "field/field_system_sub2_decl.h"
 #include "field/field_system_sub3.h"
@@ -101,7 +100,7 @@ typedef struct FieldSystem_t {
     const BattleRegulation *unk_B0;
     UnkStruct_0209ACBC *unk_B4;
     BOOL unk_B8;
-    UnkStruct_0209C370 *unk_BC;
+    u8 *battleSubscreenCursorOn;
     u32 unk_C0;
     UnkStruct_ov66_0222DCE0_sub1 unk_C4;
 } FieldSystem;
diff --git a/include/field_battle_data_transfer.h b/include/field_battle_data_transfer.h
index 01382ca30f..44602ea51d 100644
--- a/include/field_battle_data_transfer.h
+++ b/include/field_battle_data_transfer.h
@@ -2,6 +2,7 @@
 #define POKEPLATINUM_FIELD_BATTLE_DATA_TRANSFER_H
 
 #include "constants/battle.h"
+
 #include "struct_decls/pokedexdata_decl.h"
 #include "struct_decls/struct_02027F8C_decl.h"
 #include "struct_decls/struct_0202C878_decl.h"
@@ -9,7 +10,6 @@
 #include "struct_decls/struct_020797DC_decl.h"
 #include "struct_decls/struct_party_decl.h"
 #include "struct_defs/chatot_cry.h"
-#include "struct_defs/struct_0209C370.h"
 #include "struct_defs/trainer_data.h"
 
 #include "field/field_system_decl.h"
@@ -71,8 +71,8 @@ typedef struct FieldBattleDTO {
     u8 unk_18A;
     u8 dummy18B;
     int totalTurnsElapsed;
-    UnkStruct_0209C370 *unk_190;
-    u8 unk_194[4];
+    u8 *subscreenCursorOn;
+    u8 unk_194[MAX_BATTLERS];
     SaveData *saveData;
     u32 unk_19C;
 } FieldBattleDTO;
@@ -86,7 +86,7 @@ void sub_0205213C(FieldBattleDTO *param0, Pokemon *param1, int param2);
 void sub_02052164(FieldBattleDTO *param0, const Party *param1, int param2);
 void sub_02052184(FieldBattleDTO *param0, const TrainerInfo *param1, int param2);
 void sub_020521A4(FieldBattleDTO *param0, const ChatotCry *param1, int param2);
-void sub_020521B8(FieldBattleDTO *param0, const FieldSystem *fieldSystem, SaveData *param2, int param3, Journal *param4, BagCursor *param5, UnkStruct_0209C370 *param6);
+void sub_020521B8(FieldBattleDTO *param0, const FieldSystem *fieldSystem, SaveData *param2, int param3, Journal *param4, BagCursor *param5, u8 *param6);
 void sub_02052314(FieldBattleDTO *param0, const FieldSystem *fieldSystem);
 void sub_02052348(FieldBattleDTO *param0, const FieldSystem *fieldSystem, int param2);
 void sub_020524E4(FieldBattleDTO *param0, const FieldSystem *fieldSystem, const Party *param2, const u8 *param3);
diff --git a/include/overlay104/struct_ov104_02230BE4.h b/include/overlay104/struct_ov104_02230BE4.h
index faed36b0e0..3c595445b7 100644
--- a/include/overlay104/struct_ov104_02230BE4.h
+++ b/include/overlay104/struct_ov104_02230BE4.h
@@ -1,8 +1,6 @@
 #ifndef POKEPLATINUM_STRUCT_OV104_02230BE4_H
 #define POKEPLATINUM_STRUCT_OV104_02230BE4_H
 
-#include "struct_defs/struct_0209C370.h"
-
 #include "field/field_system_decl.h"
 
 #include "bag.h"
@@ -19,7 +17,7 @@ typedef struct {
     int unk_14;
     int unk_18;
     int unk_1C;
-    UnkStruct_0209C370 *unk_20;
+    u8 *unk_20;
     u8 unk_24;
     FieldSystem *fieldSystem;
 } UnkStruct_ov104_02230BE4;
diff --git a/include/struct_defs/battle_system.h b/include/struct_defs/battle_system.h
index b7fe3c058b..f29a0c0424 100644
--- a/include/struct_defs/battle_system.h
+++ b/include/struct_defs/battle_system.h
@@ -18,7 +18,6 @@
 #include "struct_decls/struct_party_decl.h"
 #include "struct_defs/chatot_cry.h"
 #include "struct_defs/struct_0207C690.h"
-#include "struct_defs/struct_0209C370.h"
 #include "struct_defs/trainer_data.h"
 
 #include "battle/battle_context.h"
@@ -31,8 +30,8 @@
 #include "overlay012/struct_ov12_0221FCDC_decl.h"
 
 #include "bag.h"
-#include "field_battle_data_transfer.h"
 #include "bg_window.h"
+#include "field_battle_data_transfer.h"
 #include "game_options.h"
 #include "message.h"
 #include "palette.h"
@@ -83,7 +82,7 @@ struct BattleSystem {
     Options *unk_1B0;
     UnkStruct_02027F8C *unk_1B4;
     void *unk_1B8;
-    UnkStruct_0209C370 *unk_1BC;
+    u8 *unk_1BC;
     UnkStruct_ov10_0221F800 *unk_1C0;
     PokemonAnimationSys *unk_1C4;
     NNSG2dCellTransferState *cellTransferState;
diff --git a/include/struct_defs/struct_0209C370.h b/include/struct_defs/struct_0209C370.h
deleted file mode 100644
index 4abccdce22..0000000000
--- a/include/struct_defs/struct_0209C370.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef POKEPLATINUM_STRUCT_0209C370_H
-#define POKEPLATINUM_STRUCT_0209C370_H
-
-typedef struct {
-    u8 unk_00;
-    u8 padding_01[3];
-} UnkStruct_0209C370;
-
-#endif // POKEPLATINUM_STRUCT_0209C370_H
diff --git a/include/unk_0209C370.h b/include/unk_0209C370.h
index b652fe86af..bc583b72c7 100644
--- a/include/unk_0209C370.h
+++ b/include/unk_0209C370.h
@@ -1,9 +1,7 @@
 #ifndef POKEPLATINUM_UNK_0209C370_H
 #define POKEPLATINUM_UNK_0209C370_H
 
-#include "struct_defs/struct_0209C370.h"
-
-UnkStruct_0209C370 *sub_0209C370(int param0);
-void sub_0209C388(UnkStruct_0209C370 *param0);
+u8 *sub_0209C370(int param0);
+void sub_0209C388(u8 *param0);
 
 #endif // POKEPLATINUM_UNK_0209C370_H
diff --git a/src/battle/ov16_0223B140.c b/src/battle/ov16_0223B140.c
index 8734399b23..b20f82e921 100644
--- a/src/battle/ov16_0223B140.c
+++ b/src/battle/ov16_0223B140.c
@@ -736,7 +736,7 @@ static void ov16_0223BCB4(OverlayManager *param0)
 
     v1->pcBoxes = v0->pcBoxes;
     v1->bagCursor = v0->unk_5C;
-    v1->unk_190 = v0->unk_1BC;
+    v1->subscreenCursorOn = v0->unk_1BC;
     v1->poketchData = v0->poketchData;
     v1->unk_10C = v0->unk_9C;
     v1->countSafariBalls = v0->safariBalls;
@@ -1091,7 +1091,7 @@ static void ov16_0223C2C0(BattleSystem *param0, FieldBattleDTO *param1)
     param0->unk_1B0 = param1->options;
     param0->unk_1B4 = param1->unk_124;
     param0->unk_5C = param1->bagCursor;
-    param0->unk_1BC = param1->unk_190;
+    param0->unk_1BC = param1->subscreenCursorOn;
     param0->poketchData = param1->poketchData;
     param0->unk_2420 = param1->mapEvolutionMethod;
     param0->unk_9C = param1->unk_10C;
diff --git a/src/battle/ov16_0226871C.c b/src/battle/ov16_0226871C.c
index 4442b89ad3..347b596a18 100644
--- a/src/battle/ov16_0226871C.c
+++ b/src/battle/ov16_0226871C.c
@@ -13,7 +13,6 @@
 #include "struct_defs/sprite_template.h"
 #include "struct_defs/struct_0200D0F4.h"
 #include "struct_defs/struct_020127E8.h"
-#include "struct_defs/struct_0209C370.h"
 
 #include "battle/battle_display.h"
 #include "battle/ov16_0223DF00.h"
@@ -197,7 +196,7 @@ typedef struct {
 
 typedef struct UnkStruct_ov16_02268A14_t {
     BattleSystem *unk_00;
-    UnkStruct_0209C370 *unk_04;
+    u8 *unk_04;
     SysTask *unk_08;
     SysTask *unk_0C;
     SysTask *unk_10;
@@ -1050,7 +1049,7 @@ void ov16_022687A0(BgConfig *param0)
     }
 }
 
-void *ov16_022687C8(NARC *param0, NARC *param1, BattleSystem *param2, int param3, UnkStruct_0209C370 *param4)
+void *ov16_022687C8(NARC *param0, NARC *param1, BattleSystem *param2, int param3, u8 *param4)
 {
     UnkStruct_ov16_02268A14 *v0;
     PaletteData *v1;
@@ -1062,7 +1061,7 @@ void *ov16_022687C8(NARC *param0, NARC *param1, BattleSystem *param2, int param3
     v0->unk_04 = param4;
 
     if (v0->unk_04 != NULL) {
-        v0->unk_6C0 = param4->unk_00;
+        v0->unk_6C0 = *param4;
     } else {
         (void)0;
     }
@@ -1177,7 +1176,7 @@ void ov16_02268A14(UnkStruct_ov16_02268A14 *param0)
     int v0;
 
     if (param0->unk_04 != NULL) {
-        param0->unk_04->unk_00 = param0->unk_6C0;
+        *param0->unk_04 = param0->unk_6C0;
     }
 
     ov16_0226B1E8(param0);
diff --git a/src/field_battle_data_transfer.c b/src/field_battle_data_transfer.c
index 7226170d41..97c9e6a602 100644
--- a/src/field_battle_data_transfer.c
+++ b/src/field_battle_data_transfer.c
@@ -14,7 +14,6 @@
 #include "struct_defs/chatot_cry.h"
 #include "struct_defs/struct_0202610C.h"
 #include "struct_defs/struct_0205EC34.h"
-#include "struct_defs/struct_0209C370.h"
 #include "struct_defs/trainer_data.h"
 
 #include "applications/pokemon_summary_screen/main.h"
@@ -105,7 +104,7 @@ FieldBattleDTO *sub_02051D8C(int param0, u32 param1)
     v1->options = Options_New(param0);
     v1->unk_10C = sub_0206D140(param0);
     v1->bagCursor = NULL;
-    v1->unk_190 = NULL;
+    v1->subscreenCursorOn = NULL;
     v1->countSafariBalls = 0;
     v1->unk_104 = NULL;
     v1->records = NULL;
@@ -185,7 +184,7 @@ FieldBattleDTO *sub_02051F4C(int param0, const FieldSystem *fieldSystem)
 
     v4->pcBoxes = SaveData_PCBoxes(fieldSystem->saveData);
     v4->bagCursor = fieldSystem->unk_98;
-    v4->unk_190 = NULL;
+    v4->subscreenCursorOn = NULL;
     v4->records = SaveData_GetGameRecordsPtr(fieldSystem->saveData);
     v4->journal = fieldSystem->journal;
     v4->mapHeaderID = fieldSystem->location->mapId;
@@ -247,7 +246,7 @@ void sub_020521A4(FieldBattleDTO *param0, const ChatotCry *param1, int param2)
     CopyChatotCryData(param0->chatotCries[param2], param1);
 }
 
-void sub_020521B8(FieldBattleDTO *param0, const FieldSystem *fieldSystem, SaveData *param2, int param3, Journal *param4, BagCursor *param5, UnkStruct_0209C370 *param6)
+void sub_020521B8(FieldBattleDTO *param0, const FieldSystem *fieldSystem, SaveData *param2, int param3, Journal *param4, BagCursor *param5, u8 *param6)
 {
     TrainerInfo *v0 = SaveData_GetTrainerInfo(param2);
     Party *v1 = Party_GetFromSavedata(param2);
@@ -284,7 +283,7 @@ void sub_020521B8(FieldBattleDTO *param0, const FieldSystem *fieldSystem, SaveDa
     param0->metBebe = SystemFlag_CheckMetBebe(SaveData_GetVarsFlags(param2));
     param0->fieldWeather = FieldOverworldState_GetWeather(v6);
     param0->bagCursor = param5;
-    param0->unk_190 = param6;
+    param0->subscreenCursorOn = param6;
     param0->poketchData = SaveData_PoketchData(param2);
     param0->unk_104 = sub_0202C878(param2);
     param0->records = SaveData_GetGameRecordsPtr(param2);
@@ -296,7 +295,7 @@ void sub_020521B8(FieldBattleDTO *param0, const FieldSystem *fieldSystem, SaveDa
 
 void sub_02052314(FieldBattleDTO *battleParams, const FieldSystem *fieldSystem)
 {
-    sub_020521B8(battleParams, fieldSystem, fieldSystem->saveData, fieldSystem->location->mapId, fieldSystem->journal, fieldSystem->unk_98, fieldSystem->unk_BC);
+    sub_020521B8(battleParams, fieldSystem, fieldSystem->saveData, fieldSystem->location->mapId, fieldSystem->journal, fieldSystem->unk_98, fieldSystem->battleSubscreenCursorOn);
     sub_02052894(battleParams);
 }
 
@@ -341,7 +340,7 @@ void sub_02052348(FieldBattleDTO *param0, const FieldSystem *fieldSystem, int pa
     param0->pcBoxes = SaveData_PCBoxes(fieldSystem->saveData);
     param0->timeOfDay = sub_02055BA8(fieldSystem);
     param0->bagCursor = fieldSystem->unk_98;
-    param0->unk_190 = fieldSystem->unk_BC;
+    param0->subscreenCursorOn = fieldSystem->battleSubscreenCursorOn;
     param0->poketchData = SaveData_PoketchData(fieldSystem->saveData);
     param0->unk_104 = sub_0202C878(fieldSystem->saveData);
     param0->records = SaveData_GetGameRecordsPtr(fieldSystem->saveData);
@@ -411,7 +410,7 @@ void sub_020524E4(FieldBattleDTO *param0, const FieldSystem *fieldSystem, const
     param0->pcBoxes = SaveData_PCBoxes(fieldSystem->saveData);
     param0->timeOfDay = sub_02055BA8(fieldSystem);
     param0->bagCursor = fieldSystem->unk_98;
-    param0->unk_190 = fieldSystem->unk_BC;
+    param0->subscreenCursorOn = fieldSystem->battleSubscreenCursorOn;
     param0->unk_104 = sub_0202C878(fieldSystem->saveData);
     param0->records = SaveData_GetGameRecordsPtr(fieldSystem->saveData);
     param0->journal = fieldSystem->journal;
diff --git a/src/field_system.c b/src/field_system.c
index 3d38f0d4f6..315a499131 100644
--- a/src/field_system.c
+++ b/src/field_system.c
@@ -170,7 +170,7 @@ static FieldSystem *InitFieldSystem(OverlayManager *ovyManager)
     RadarChain_Clear(fieldSystem->chain);
 
     fieldSystem->unk_B4 = sub_0209ACBC(HEAP_ID_FIELDMAP);
-    fieldSystem->unk_BC = sub_0209C370(HEAP_ID_FIELDMAP);
+    fieldSystem->battleSubscreenCursorOn = sub_0209C370(HEAP_ID_FIELDMAP);
 
     return fieldSystem;
 }
@@ -184,7 +184,7 @@ static void TeardownFieldSystem(OverlayManager *ovyManager)
     Heap_FreeToHeap(fieldSystem->unk_98);
     RadarChain_Free(fieldSystem->chain);
     sub_0209ACDC(fieldSystem->unk_B4);
-    sub_0209C388(fieldSystem->unk_BC);
+    sub_0209C388(fieldSystem->battleSubscreenCursorOn);
 
     Heap_FreeToHeap(fieldSystem->processManager);
     OverlayManager_FreeData(ovyManager);
diff --git a/src/scrcmd.c b/src/scrcmd.c
index 04161869e1..7de1c5b365 100644
--- a/src/scrcmd.c
+++ b/src/scrcmd.c
@@ -7788,7 +7788,7 @@ static BOOL ScrCmd_2C4(ScriptContext *ctx)
     v2->unk_1C = ctx->fieldSystem->location->mapId;
     v2->unk_0C = ctx->fieldSystem->journal;
     v2->unk_10 = ctx->fieldSystem->unk_98;
-    v2->unk_20 = ctx->fieldSystem->unk_BC;
+    v2->unk_20 = ctx->fieldSystem->battleSubscreenCursorOn;
 
     FieldTask_RunApplication(ctx->task, &Unk_020F8BE0, v2);
     ScriptContext_Pause(ctx, sub_02041CC8);
diff --git a/src/unk_0209BA18.c b/src/unk_0209BA18.c
index 222f5d1cc5..c1591a3d83 100644
--- a/src/unk_0209BA18.c
+++ b/src/unk_0209BA18.c
@@ -32,7 +32,7 @@ UnkStruct_ov104_02230BE4 *sub_0209BA18(FieldSystem *fieldSystem, void *param1)
     v0->unk_08 = fieldSystem->saveData;
     v0->unk_0C = fieldSystem->journal;
     v0->unk_10 = fieldSystem->unk_98;
-    v0->unk_20 = fieldSystem->unk_BC;
+    v0->unk_20 = fieldSystem->battleSubscreenCursorOn;
     v0->unk_14 = 0;
     v0->unk_18 = 0;
     v0->unk_1C = fieldSystem->location->mapId;
diff --git a/src/unk_0209C370.c b/src/unk_0209C370.c
index c303d72a1f..4dd7f07cce 100644
--- a/src/unk_0209C370.c
+++ b/src/unk_0209C370.c
@@ -1,22 +1,17 @@
 #include "unk_0209C370.h"
 
-#include <nitro.h>
-#include <string.h>
-
-#include "struct_defs/struct_0209C370.h"
-
 #include "heap.h"
 
-UnkStruct_0209C370 *sub_0209C370(int param0)
+u8 *sub_0209C370(int param0)
 {
-    UnkStruct_0209C370 *v0;
+    u8 *v0;
 
-    v0 = Heap_AllocFromHeap(param0, sizeof(UnkStruct_0209C370));
-    MI_CpuClear8(v0, sizeof(UnkStruct_0209C370));
+    v0 = Heap_AllocFromHeap(param0, sizeof(void *));
+    MI_CpuClear8(v0, sizeof(void *));
     return v0;
 }
 
-void sub_0209C388(UnkStruct_0209C370 *param0)
+void sub_0209C388(u8 *param0)
 {
     Heap_FreeToHeap(param0);
 }