diff --git a/configure.py b/configure.py
index f6d9e870f..5a19f1a2a 100755
--- a/configure.py
+++ b/configure.py
@@ -1531,7 +1531,7 @@ config.libs = [
     ActorRel(NonMatching, "d_a_npc_cb1"),
     ActorRel(NonMatching, "d_a_npc_md"),
     ActorRel(NonMatching, "d_a_npc_so"),
-    ActorRel(NonMatching, "d_a_nzg"),
+    ActorRel(Matching, "d_a_nzg"),
     ActorRel(NonMatching, "d_a_obj_aygr"),
     ActorRel(NonMatching, "d_a_obj_balancelift"),
     ActorRel(MatchingFor("GZLJ01", "GZLE01", "GZLP01"),    "d_a_obj_barrier"),
diff --git a/include/d/actor/d_a_nzg.h b/include/d/actor/d_a_nzg.h
index c9523cf30..6c0330451 100644
--- a/include/d/actor/d_a_nzg.h
+++ b/include/d/actor/d_a_nzg.h
@@ -2,10 +2,31 @@
 #define D_A_NZG_H
 
 #include "f_op/f_op_actor.h"
+#include "d/d_cc_d.h"
 
-class nzg_class : public fopAc_ac_c {
+struct dPath;
+
+struct nzg_class {
 public:
-    /* Place member variables here */
+    /* 0x000 */ fopEn_enemy_c actor;
+    /* 0x2AC */ request_of_phase_process_class mPhs;
+    /* 0x2B4 */ J3DModel* mpModel;
+    /* 0x2B8 */ u8 m2B8;
+    /* 0x2B9 */ u8 m2B9;
+    /* 0x2BA */ u8 m2BA;
+    /* 0x2BB */ u8 m2BB;
+    /* 0x2BC */ u8 m2BC[0x2BE - 0x2BC];
+    /* 0x2BE */ s16 m2BE;
+    /* 0x2C0 */ s16 m2C0;
+    /* 0x2C2 */ s16 m2C2[5];
+    /* 0x2CC */ f32 m2CC;
+    /* 0x2D0 */ f32 m2D0;
+    /* 0x2D4 */ fpc_ProcID m2D4;
+    /* 0x2D8 */ dPath* mpPath;
+    /* 0x2DC */ u8 m2DC[0x2E9 - 0x2DC];
+    /* 0x2E9 */ u8 m2E9;
+    /* 0x2EC */ dCcD_Stts mStts;
+    /* 0x328 */ dCcD_Cyl mCyl;
 };
 
 #endif /* D_A_NZG_H */
diff --git a/src/d/actor/d_a_nzg.cpp b/src/d/actor/d_a_nzg.cpp
index 6eaeff68b..46ca1660a 100644
--- a/src/d/actor/d_a_nzg.cpp
+++ b/src/d/actor/d_a_nzg.cpp
@@ -1,32 +1,130 @@
-//
-// Generated by dtk
-// Translation Unit: d_a_nzg.cpp
-//
+/**
+ * d_a_nzg.cpp
+ * Enemy - Rat Group
+ */
 
 #include "d/dolzel_rel.h" // IWYU pragma: keep
 #include "d/actor/d_a_nzg.h"
+#include "d/d_path.h"
 #include "d/d_procname.h"
 #include "d/d_priority.h"
-#include "d/d_cc_d.h"
+#include "d/d_s_play.h"
+#include "d/res/res_nzg.h"
 
 /* 00000078-000000E4       .text daNZG_Draw__FP9nzg_class */
-static BOOL daNZG_Draw(nzg_class*) {
-    /* Nonmatching */
+static BOOL daNZG_Draw(nzg_class* i_this) {
+    J3DModel* model = i_this->mpModel;
+    g_env_light.settingTevStruct(TEV_TYPE_ACTOR, &i_this->actor.current.pos, &i_this->actor.tevStr);
+    g_env_light.setLightTevColorType(model, &i_this->actor.tevStr);
+    mDoExt_modelUpdateDL(model);
+    return TRUE;
+}
+
+//Note: dummy function is required for matching rodata
+static f32 dummy40(int arg1) {
+    if (arg1 == 1) {
+        return 40.0f;
+    } else if (arg1 == 2) {
+        return 0.0f;
+    } else if (arg1 == 3) {
+        f64 val = 0.5;
+        return val;
+    } else if (arg1 == 4) {
+        f64 val = 3.0;
+        return val;
+    } else {
+        return 300.0f;
+    }
 }
 
 /* 000000E4-00000348       .text nzg_00_move__FP9nzg_class */
-void nzg_00_move(nzg_class*) {
-    /* Nonmatching */
+void nzg_00_move(nzg_class* i_this) {
+    /* Nonmatching for Demo */
+    //fixes regswap issue in demo for the most part but introduces a misplaced instruction error
+    fopAc_ac_c* actor = &i_this->actor;
+
+    if (i_this->m2C2[0] != 0 || i_this->m2BE >= i_this->m2C0) {
+        return;
+    }
+
+    i_this->mCyl.SetC(actor->current.pos);
+    i_this->mCyl.SetH(REG8_F(11) + 40.0f);
+    i_this->mCyl.SetR(REG8_F(12) + 40.0f);
+    dComIfG_Ccsp()->Set(&i_this->mCyl);
+
+    if (i_this->mCyl.ChkCoHit()) {
+        fopAc_ac_c* hit_actor = i_this->mCyl.GetCoHitAc();
+        if (hit_actor != NULL) {
+            s16 hitAC_name = fopAcM_GetName(hit_actor);
+            if (hitAC_name != PROC_NZ && hitAC_name != PROC_BOMB && hitAC_name != PROC_Bomb2 && hitAC_name != PROC_ITEM && hitAC_name != PROC_ESA) {
+                i_this->m2D4 = fopAcM_GetID(hit_actor);
+                i_this->m2BB = 1;
+                return;
+            }
+        }
+    }
+
+    u32 parameters = fopAcM_GetParam(actor) & 0xFF000000;
+
+    if (i_this->m2BA == 1) {
+        parameters |= 0x100;
+    } else if (i_this->m2BA == 2 && cM_rnd() < 0.5f) {
+        parameters |= 0x100;
+    }
+
+    if (parameters & 0x100 || fopAcM_searchActorDistance(actor, dComIfGp_getPlayer(0)) < i_this->m2CC * 0.5f) {
+        if (fopAcM_searchActorDistance(actor, dComIfGp_getPlayer(0)) > i_this->m2D0 * 0.5f) {
+            parameters |= 1;
+            csXyz child_angle = actor->current.angle;
+
+            child_angle.y += cM_rndFX(8192.0f);
+            fpc_ProcID childProcID = fopAcM_createChild(PROC_NZ, fopAcM_GetID(actor), parameters, &actor->current.pos, fopAcM_GetRoomNo(actor), &child_angle, &actor->scale, NULL);
+
+            if (childProcID != fpcM_ERROR_PROCESS_ID_e) {
+                i_this->m2C2[0] = (childProcID & 3) * 10 + 20;
+                i_this->m2BE++;
+            }
+        }
+    }
 }
 
 /* 00000348-00000450       .text nzg_01_move__FP9nzg_class */
-void nzg_01_move(nzg_class*) {
-    /* Nonmatching */
+void nzg_01_move(nzg_class* i_this) {
+    if (i_this->m2D4 != fpcM_ERROR_PROCESS_ID_e) {
+        fopAc_ac_c* ac_id = fopAcM_SearchByID(i_this->m2D4);
+        if (ac_id != NULL) {
+            f32 pos_x_diff = i_this->actor.current.pos.x - ac_id->current.pos.x;
+            f32 pos_z_diff = i_this->actor.current.pos.z - ac_id->current.pos.z;
+            pos_x_diff = (pos_x_diff * pos_x_diff) + (pos_z_diff * pos_z_diff);
+
+            if (std::sqrtf(pos_x_diff) < 80.0f) {
+                return;
+            }
+        }
+    }
+    i_this->m2D4 = fpcM_ERROR_PROCESS_ID_e;
+    i_this->m2BB = 0;
 }
 
 /* 00000450-000004D0       .text daNZG_Execute__FP9nzg_class */
-static BOOL daNZG_Execute(nzg_class*) {
-    /* Nonmatching */
+static BOOL daNZG_Execute(nzg_class* i_this) {
+    i_this->m2D0 = 400.0f;
+    s32 j = 0;
+    for (s32 i = 4; i != 0;  i--) {
+        if (i_this->m2C2[j] != 0) {
+            i_this->m2C2[j]--;
+        }
+        j += 1;
+    }
+    switch (i_this->m2BB) {
+        case 0:
+            nzg_00_move(i_this);
+            break;
+        case 1:
+            nzg_01_move(i_this);
+            break;
+    }
+    return TRUE;
 }
 
 /* 000004D0-000004D8       .text daNZG_IsDelete__FP9nzg_class */
@@ -35,18 +133,35 @@ static BOOL daNZG_IsDelete(nzg_class*) {
 }
 
 /* 000004D8-00000508       .text daNZG_Delete__FP9nzg_class */
-static BOOL daNZG_Delete(nzg_class*) {
-    /* Nonmatching */
+static BOOL daNZG_Delete(nzg_class* i_this) {
+    dComIfG_resDeleteDemo(&i_this->mPhs, "NZG");
+    return TRUE;
 }
 
 /* 00000508-00000620       .text useHeapInit__FP10fopAc_ac_c */
-static BOOL useHeapInit(fopAc_ac_c*) {
-    /* Nonmatching */
+static BOOL useHeapInit(fopAc_ac_c* i_this) {
+    nzg_class* nzg_this = (nzg_class*)i_this;
+
+    mDoMtx_stack_c::transS(nzg_this->actor.current.pos.x,  nzg_this->actor.current.pos.y,  nzg_this->actor.current.pos.z);
+    mDoMtx_stack_c::YrotM(nzg_this->actor.shape_angle.y);
+
+    J3DModelData* modelData = (J3DModelData*)dComIfG_getObjectRes("NZG",  NZG_BDL_KANA_00);
+    JUT_ASSERT(630, modelData != NULL);
+    J3DModel* model = mDoExt_J3DModel__create(modelData, 0,0x11020203);
+
+    if (model == NULL) {
+        return FALSE;
+    }
+
+    nzg_this->mpModel = model;
+    model->setBaseScale(nzg_this->actor.scale);
+    model->setBaseTRMtx(mDoMtx_stack_c::get());
+    fopAcM_SetMtx(&nzg_this->actor, model->getBaseTRMtx());
+    return TRUE;
 }
 
 /* 00000620-00000864       .text daNZG_Create__FP10fopAc_ac_c */
-static cPhs_State daNZG_Create(fopAc_ac_c*) {
-    /* Nonmatching */
+static cPhs_State daNZG_Create(fopAc_ac_c* i_this) {
     static dCcD_SrcCyl body_cyl_src = {
         // dCcD_SrcGObjInf
         {
@@ -76,6 +191,45 @@ static cPhs_State daNZG_Create(fopAc_ac_c*) {
             /* Height */ 20.0f,
         }},
     };
+#if VERSION == VERSION_DEMO
+    nzg_class* nzg_this = (nzg_class*)i_this;
+    cPhs_State phase_state = dComIfG_resLoad(&nzg_this->mPhs, "NZG");
+    if (phase_state == cPhs_COMPLEATE_e) {
+        fopAcM_SetupActor(i_this, nzg_class);
+#else
+    nzg_class* nzg_this = (nzg_class*)i_this;
+    fopAcM_SetupActor(i_this, nzg_class);
+    cPhs_State phase_state = dComIfG_resLoad(&nzg_this->mPhs, "NZG");
+    if (phase_state == cPhs_COMPLEATE_e) {
+#endif
+        if (!fopAcM_entrySolidHeap(&nzg_this->actor, useHeapInit, 0x680)) {
+            return cPhs_ERROR_e;
+        }
+        nzg_this->m2B8 = fopAcM_GetParam(nzg_this);
+        nzg_this->m2B9 = fopAcM_GetParam(nzg_this) >> 8;
+        nzg_this->m2BA = fopAcM_GetParam(nzg_this) >> 16;
+        nzg_this->m2E9 = fopAcM_GetParam(nzg_this) >> 24;
+        if (nzg_this->m2E9 != 0xFF) {
+            nzg_this->mpPath = dPath_GetRoomPath(nzg_this->m2E9, fopAcM_GetRoomNo(i_this));
+        }
+        nzg_this->actor.shape_angle.y = nzg_this->actor.current.angle.y;
+        nzg_this->m2CC = nzg_this->m2B8 * 10.0f;
+        nzg_this->m2C0 = 1;
+        if (nzg_this->m2B9 != 0) {
+            nzg_this->m2C0 = nzg_this->m2B9;
+        }
+
+        if (nzg_this->m2BA > 2) {
+            nzg_this->m2BA = 0;
+        }
+        nzg_this->mCyl.Set(body_cyl_src);
+        nzg_this->mCyl.SetStts(&nzg_this->mStts);
+        if (nzg_this->m2BA == 0) {
+            csXyz child_angle = nzg_this->actor.current.angle;
+            fopAcM_createChild("NpcNz",fpcM_GetID(nzg_this), 0xffffffff,  &nzg_this->actor.current.pos,  fopAcM_GetRoomNo(&nzg_this->actor), &child_angle, &nzg_this->actor.scale, NULL);
+        }
+    }
+    return phase_state;
 }
 
 static actor_method_class l_daNZG_Method = {