diff --git a/include/structures.h b/include/structures.h
index acebef3e..9c8864db 100644
--- a/include/structures.h
+++ b/include/structures.h
@@ -258,12 +258,19 @@ typedef struct {
     union SplitWord _4;
 } struct_020227E8;
 
+typedef struct {
+    s8 x;
+    s8 y;
+    s8 width;
+    s8 height;
+} Rect;
+
 typedef struct {
     /*0x00*/ u8 ignoreLayer; /* if bit 0 set, skip layer check for collision */
     /*0x01*/ u8 type;
     /*0x02*/ u8 interactDirections; /* lower 4 bits determine Link's allowed facing directions to interact, 0 to allow (0000WSEN) */
     /*0x03*/ u8 kinstoneId;
-    /*0x04*/ const s8* customHitbox; /* if set, array contains x, y, width and height */
+    /*0x04*/ const Rect* customHitbox; /* optional custom rectangle */
     /*0x08*/ Entity* entity;
 } InteractableObject;
 
@@ -351,11 +358,4 @@ typedef struct {
     u8 frame;
     u8 frameIndex;
 } PACKED FrameStruct;
-
-typedef struct {
-    s8 x;
-    s8 y;
-    s8 width;
-    s8 height;
-} Rect;
 #endif // STRUCTURES_H
diff --git a/src/npc/beedle.c b/src/npc/beedle.c
index 0b2c030a..16ed2ec2 100644
--- a/src/npc/beedle.c
+++ b/src/npc/beedle.c
@@ -9,7 +9,7 @@
 #include "item.h"
 
 typedef struct {
-    s8 customHitbox[4];
+    Rect customHitbox;
     s8 interactDirections;
     u8 unused[3];
 } InteractCollisionData;
diff --git a/src/npc/drLeft.c b/src/npc/drLeft.c
index 37f1b0e0..aef5ecc4 100644
--- a/src/npc/drLeft.c
+++ b/src/npc/drLeft.c
@@ -77,11 +77,6 @@ void sub_0806C038(Entity* this) {
 }
 
 void sub_0806C09C(Entity* this) {
-    static const s8 gUnk_081133B4[] = {
-        0,
-        6,
-        8,
-        12,
-    };
+    static const Rect gUnk_081133B4 = { 0, 6, 8, 12 };
     SetInteractableObjectCollision(this, 1, 0, &gUnk_081133B4);
 }
diff --git a/src/npc/mayorHagen.c b/src/npc/mayorHagen.c
index 01156ff0..e5e5cad3 100644
--- a/src/npc/mayorHagen.c
+++ b/src/npc/mayorHagen.c
@@ -38,14 +38,9 @@ void MayorHagen(Entity* this) {
 }
 
 void MayorHagen_MakeInteractable(Entity* this) {
-    static const s8 gUnk_08113F44[] = {
-        0,
-        8,
-        8,
-        16,
-    };
+    static const Rect gUnk_08113F44 = { 0, 8, 8, 16 };
     AddInteractableWhenBigFuser(this, GetFusionToOffer(this));
-    SetInteractableObjectCollision(this, 1, 0, gUnk_08113F44);
+    SetInteractableObjectCollision(this, 1, 0, &gUnk_08113F44);
 }
 
 void sub_0806CE80(Entity* this) {
diff --git a/src/npc/npc4E.c b/src/npc/npc4E.c
index 3cc60593..1ec89710 100644
--- a/src/npc/npc4E.c
+++ b/src/npc/npc4E.c
@@ -12,7 +12,7 @@
 #include "sound.h"
 
 typedef struct {
-    s8 customHitbox[4];
+    Rect customHitbox;
     u8 interactDirections;
     u8 unused[3];
 } InteractCollisionData;
diff --git a/src/npc/rem.c b/src/npc/rem.c
index 6ea7e751..01db2ab1 100644
--- a/src/npc/rem.c
+++ b/src/npc/rem.c
@@ -329,7 +329,7 @@ void sub_0806A914(Entity* this) {
 }
 
 void Rem_MakeInteractable(Entity* this) {
-    static const s8 gUnk_0811229C[] = { 0, 6, 10, 16 };
+    static const Rect gUnk_0811229C = { 0, 6, 10, 16 };
     AddInteractableWhenBigObject(this);
     SetInteractableObjectCollision(this, 0, 0, &gUnk_0811229C);
 }
diff --git a/src/npc/smallTownMinish.c b/src/npc/smallTownMinish.c
index 8b69b4ff..5bbe8040 100644
--- a/src/npc/smallTownMinish.c
+++ b/src/npc/smallTownMinish.c
@@ -9,12 +9,12 @@
 
 void SmallTownMinish(Entity* this) {
     static const Hitbox gUnk_081142FC = { -2, 1, { 0, 0, 0, 0 }, 6, 6 };
-    static const s8 gUnk_08114304[] = { -2, 1, 6, 6 };
+    static const Rect gUnk_08114304 = { -2, 1, 6, 6 };
     if (this->action == 0) {
         this->action++;
         this->hitbox = (Hitbox*)&gUnk_081142FC;
         sub_0807DD50(this);
-        SetInteractableObjectCollision(this, 1, 0, gUnk_08114304);
+        SetInteractableObjectCollision(this, 1, 0, &gUnk_08114304);
     } else {
         sub_0807DD94(this, NULL);
     }
diff --git a/src/npc/smith.c b/src/npc/smith.c
index 745acc7e..bc5df016 100644
--- a/src/npc/smith.c
+++ b/src/npc/smith.c
@@ -206,12 +206,7 @@ void sub_08066258(void) {
 }
 
 void Smith_ChangeInteractableHitbox(Entity* this) {
-    static const s8 gUnk_081103E0[] = {
-        0,
-        6,
-        8,
-        12,
-    };
+    static const Rect gUnk_081103E0 = { 0, 6, 8, 12 };
     SetInteractableObjectCollision(this, 1, 0, &gUnk_081103E0);
 }
 
diff --git a/src/npc/stockwell.c b/src/npc/stockwell.c
index cef0a8a1..7230bd7a 100644
--- a/src/npc/stockwell.c
+++ b/src/npc/stockwell.c
@@ -9,7 +9,7 @@
 #include "game.h"
 
 #ifndef EU
-static const s8 gUnk_0810FDA0[] = { 0, 8, 10, 16 };
+static const Rect gUnk_0810FDA0 = { 0, 8, 10, 16 };
 #endif
 
 extern u16 script_StockwellBuy[];
diff --git a/src/npc/townMinish.c b/src/npc/townMinish.c
index 3dc58b06..a8cb574b 100644
--- a/src/npc/townMinish.c
+++ b/src/npc/townMinish.c
@@ -129,13 +129,13 @@ static const SpriteLoadData gUnk_08112674[][4] = {
         { 0x0, 0x0, 0x0 },
     },
 };
-static const s8 gUnk_081126D4[][4] = {
+static const Rect gUnk_081126D4[4] = {
     { 0, 8, 8, 16 },
     { -8, -2, 16, 8 },
     { 0, 8, 8, 16 },
     { 8, -2, 16, 8 },
 };
-static const u8 gUnk_081126E4[4] = { 14, 13, 11, 7 };
+static const u8 gUnk_081126E4[4] = { 0x0e, 0x0d, 0x0b, 0x07 };
 
 void TownMinish(Entity* this) {
     static void (*const scriptedActionFuncs[])(Entity*) = {
@@ -228,7 +228,7 @@ void sub_0806ACC4(Entity* this) {
                 }
                 if (this->type == 1) {
                     u8 idx = gPlayerEntity.animationState >> 1;
-                    SetInteractableObjectCollision(this, 1, gUnk_081126E4[idx], gUnk_081126D4[idx]);
+                    SetInteractableObjectCollision(this, 1, gUnk_081126E4[idx], &gUnk_081126D4[idx]);
                 }
             }
             break;
diff --git a/src/object/windcrest.c b/src/object/windcrest.c
index 07802edb..815a0f4a 100644
--- a/src/object/windcrest.c
+++ b/src/object/windcrest.c
@@ -23,8 +23,8 @@ void Windcrest(Entity* this) {
 }
 
 void Windcrest_ChangeInteractableHitbox(Entity* this) {
-    static const s8 gUnk_08125010[] = { 0, 0, 12, 12 };
-    SetInteractableObjectCollision(this, 1, 0xe, gUnk_08125010);
+    static const Rect gUnk_08125010 = { 0, 0, 12, 12 };
+    SetInteractableObjectCollision(this, 1, 0xe, &gUnk_08125010);
 }
 
 void Windcrest_Unlock(Entity* this) {