diff --git a/spec b/spec
index ca0cf9a0dc..c45ba6d01c 100644
--- a/spec
+++ b/spec
@@ -3724,8 +3724,7 @@ beginseg
     name "ovl_En_Onpuman"
     compress
     include "build/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.o"
-    include "build/data/ovl_En_Onpuman/ovl_En_Onpuman.data.o"
-    include "build/data/ovl_En_Onpuman/ovl_En_Onpuman.reloc.o"
+    include "build/src/overlays/actors/ovl_En_Onpuman/ovl_En_Onpuman_reloc.o"
 endseg
 
 beginseg
diff --git a/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.c b/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.c
index 25b9c51606..095dbfaa99 100644
--- a/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.c
+++ b/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.c
@@ -14,7 +14,8 @@ void EnOnpuman_Init(Actor* thisx, PlayState* play);
 void EnOnpuman_Destroy(Actor* thisx, PlayState* play);
 void EnOnpuman_Update(Actor* thisx, PlayState* play);
 
-#if 0
+void func_80B121D8(EnOnpuman* this, PlayState* play);
+
 const ActorInit En_Onpuman_InitVars = {
     ACTOR_EN_ONPUMAN,
     ACTORCAT_NPC,
@@ -27,29 +28,150 @@ const ActorInit En_Onpuman_InitVars = {
     (ActorFunc)NULL,
 };
 
-// static ColliderCylinderInit sCylinderInit = {
-static ColliderCylinderInit D_80B12390 = {
-    { COLTYPE_NONE, AT_NONE, AC_ON | AC_TYPE_PLAYER, OC1_ON | OC1_TYPE_ALL, OC2_TYPE_1, COLSHAPE_CYLINDER, },
-    { ELEMTYPE_UNK0, { 0x00000000, 0x00, 0x00 }, { 0x00000000, 0x00, 0x00 }, TOUCH_NONE | TOUCH_SFX_NORMAL, BUMP_ON, OCELEM_ON, },
+static ColliderCylinderInit sCylinderInit = {
+    {
+        COLTYPE_NONE,
+        AT_NONE,
+        AC_ON | AC_TYPE_PLAYER,
+        OC1_ON | OC1_TYPE_ALL,
+        OC2_TYPE_1,
+        COLSHAPE_CYLINDER,
+    },
+    {
+        ELEMTYPE_UNK0,
+        { 0x00000000, 0x00, 0x00 },
+        { 0x00000000, 0x00, 0x00 },
+        TOUCH_NONE | TOUCH_SFX_NORMAL,
+        BUMP_ON,
+        OCELEM_ON,
+    },
     { 30, 40, 0, { 0, 0, 0 } },
 };
 
-#endif
+void EnOnpuman_Init(Actor* thisx, PlayState* play) {
+    EnOnpuman* this = THIS;
 
-extern ColliderCylinderInit D_80B12390;
+    ActorShape_Init(&this->actor.shape, 0.0f, ActorShadow_DrawCircle, 36.0f);
+    this->actor.flags |= ACTOR_FLAG_2000000;
+    Collider_InitAndSetCylinder(play, &this->collider, &this->actor, &sCylinderInit);
+    this->actor.colChkInfo.mass = MASS_IMMOVABLE;
+    Actor_SetScale(&this->actor, 0.01f);
+    this->actor.targetMode = 6;
+    this->unk_2A4 = 0;
+    this->unk_2A0 = NULL;
+    this->actionFunc = func_80B121D8;
+    this->actor.velocity.y = -10.0f;
+    this->actor.terminalVelocity = -10.0f;
+    this->actor.gravity = -5.0f;
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_En_Onpuman/EnOnpuman_Init.s")
+void EnOnpuman_Destroy(Actor* thisx, PlayState* play) {
+    EnOnpuman* this = THIS;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_En_Onpuman/EnOnpuman_Destroy.s")
+    Collider_DestroyCylinder(play, &this->collider);
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_En_Onpuman/func_80B11F44.s")
+Actor* func_80B11F44(PlayState* play) {
+    Actor* itemAction = play->actorCtx.actorLists[ACTORCAT_ITEMACTION].first;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_En_Onpuman/func_80B11F78.s")
+    if (itemAction != NULL) {
+        if (itemAction->id != ACTOR_EN_GAKUFU) {
+            itemAction = itemAction->next;
+        }
+        return itemAction;
+    }
+    return NULL;
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_En_Onpuman/func_80B1202C.s")
+void func_80B11F78(EnOnpuman* this, PlayState* play) {
+    if (play->msgCtx.ocarinaMode == 4) {
+        this->actionFunc = func_80B121D8;
+        if (this->actor.cutscene != -1) {
+            ActorCutscene_Stop(this->actor.cutscene);
+        }
+    } else if (play->msgCtx.ocarinaMode == 3) {
+        play_sound(NA_SE_SY_CORRECT_CHIME);
+        play->msgCtx.ocarinaMode = 4;
+        if (this->actor.cutscene != -1) {
+            ActorCutscene_Stop(this->actor.cutscene);
+        }
+        this->actionFunc = func_80B121D8;
+    }
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_En_Onpuman/func_80B1217C.s")
+void func_80B1202C(EnOnpuman* this, PlayState* play2) {
+    PlayState* play = play2;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_En_Onpuman/func_80B121D8.s")
+    if ((Message_GetState(&play->msgCtx) == 5) && (Message_ShouldAdvance(play))) {
+        switch (play->msgCtx.currentTextId) {
+            case 0x8D4:
+                this->unk_2A4 |= 1;
+                func_80151938(play, 0x8DA);
+                break;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_En_Onpuman/EnOnpuman_Update.s")
+            case 0x8DA:
+                func_80151938(play, 0x8D6);
+                if (this->unk_2A0 != NULL) {
+                    this->unk_2A0->home.rot.x = 0x50;
+                }
+                break;
+
+            case 0x8D6:
+                this->actionFunc = func_80B11F78;
+                func_80152434(play, 0x3A);
+                if (this->unk_2A0 != NULL) {
+                    this->unk_2A0->home.rot.x = 0;
+                }
+                break;
+        }
+    }
+    if (this->unk_2A4 & 1) {
+        if (this->actor.cutscene == -1) {
+            this->unk_2A4 &= ~1;
+        } else if (ActorCutscene_GetCanPlayNext(this->actor.cutscene)) {
+            this->unk_2A4 &= ~1;
+            ActorCutscene_StartAndSetUnkLinkFields(this->actor.cutscene, &this->actor);
+        } else {
+            ActorCutscene_SetIntentToPlay(this->actor.cutscene);
+        }
+    }
+}
+
+void func_80B1217C(EnOnpuman* this, PlayState* play) {
+    if ((Message_GetState(&play->msgCtx) == 5) && (Message_ShouldAdvance(play))) {
+        this->actionFunc = func_80B121D8;
+        func_801477B4(play);
+    }
+}
+
+void func_80B121D8(EnOnpuman* this, PlayState* play) {
+    s16 yaw;
+
+    if (func_800B8718(&this->actor, &play->state)) {
+        this->actionFunc = func_80B1202C;
+        Message_StartTextbox(play, 0x8D4, NULL);
+        this->unk_2A0 = func_80B11F44(play);
+    } else if (Actor_ProcessTalkRequest(&this->actor, &play->state)) {
+        this->actionFunc = func_80B1217C;
+    } else {
+        yaw = this->actor.yawTowardsPlayer - this->actor.shape.rot.y;
+        if (this->actor.xzDistToPlayer < 200.0f) {
+            if (ABS_ALT(yaw) <= 0x4300) {
+                this->actor.textId = 0x8D3;
+                func_800B8614(&this->actor, play, 100.0f);
+                func_800B874C(&this->actor, play, 100.0f, 100.0f);
+            }
+        }
+    }
+}
+
+void EnOnpuman_Update(Actor* thisx, PlayState* play) {
+    s32 pad;
+    EnOnpuman* this = THIS;
+
+    Collider_UpdateCylinder(&this->actor, &this->collider);
+    CollisionCheck_SetOC(play, &play->colChkCtx, &this->collider.base);
+    Actor_MoveWithGravity(&this->actor);
+    Actor_UpdateBgCheckInfo(play, &this->actor, 0.0f, 0.0f, 0.0f, 4);
+    this->actionFunc(this, play);
+}
diff --git a/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.h b/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.h
index fe20760bb2..88cd1e4df2 100644
--- a/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.h
+++ b/src/overlays/actors/ovl_En_Onpuman/z_en_onpuman.h
@@ -8,9 +8,12 @@ struct EnOnpuman;
 typedef void (*EnOnpumanActionFunc)(struct EnOnpuman*, PlayState*);
 
 typedef struct EnOnpuman {
-    /* 0x0000 */ Actor actor;
-    /* 0x0144 */ char unk_144[0x164];
-    /* 0x02A8 */ EnOnpumanActionFunc actionFunc;
+    /* 0x000 */ Actor actor;
+    /* 0x144 */ UNK_TYPE1 pad_144[0x110];
+    /* 0x254 */ ColliderCylinder collider;
+    /* 0x2A0 */ Actor* unk_2A0;
+    /* 0x2A4 */ u16 unk_2A4; // flags
+    /* 0x2A8 */ EnOnpumanActionFunc actionFunc;
 } EnOnpuman; // size = 0x2AC
 
 extern const ActorInit En_Onpuman_InitVars;