diff --git a/include/Game/Boss/Koopa.hpp b/include/Game/Boss/Koopa.hpp
index 25aba020d..191202c35 100644
--- a/include/Game/Boss/Koopa.hpp
+++ b/include/Game/Boss/Koopa.hpp
@@ -22,7 +22,6 @@ class Koopa : public LiveActor {
     virtual bool receiveMsgEnemyAttack(u32 msg, HitSensor* pSender, HitSensor* pReceiver);
     virtual bool receiveOtherMsg(u32 msg, HitSensor* pSender, HitSensor* pReceiver);
 
-private:
     /* 0x8C */ TVec3f _8C;
     /* 0x98 */ KoopaSequencer* mSequencer;
     /* 0x9C */ KoopaSensorCtrl* mSensorCtrl;
diff --git a/include/Game/Boss/KoopaDemoJumpToPlanet.hpp b/include/Game/Boss/KoopaDemoJumpToPlanet.hpp
new file mode 100644
index 000000000..08d176812
--- /dev/null
+++ b/include/Game/Boss/KoopaDemoJumpToPlanet.hpp
@@ -0,0 +1,18 @@
+#pragma once
+
+#include "Game/Boss/Koopa.hpp"
+
+class KoopaDemoJumpToPlanet : public NerveExecutor {
+public:
+    KoopaDemoJumpToPlanet(Koopa*);
+
+    virtual void init();
+    virtual void kill();
+
+    void startReady();
+    void exeStart();
+    void exeFall();
+
+    /* 0x8 */ bool _8;
+    /* 0C */ Koopa* mParent;
+};
diff --git a/include/Game/Boss/KoopaDemoPowerUp.hpp b/include/Game/Boss/KoopaDemoPowerUp.hpp
new file mode 100644
index 000000000..4fa35d203
--- /dev/null
+++ b/include/Game/Boss/KoopaDemoPowerUp.hpp
@@ -0,0 +1,18 @@
+#pragma once
+
+#include "Game/Boss/Koopa.hpp"
+
+class KoopaDemoPowerUp : public NerveExecutor {
+public:
+    KoopaDemoPowerUp(Koopa*);
+
+    virtual void init();
+    virtual void appear();
+    virtual void kill();
+
+    void exeWaitDemo();
+    void exeDemo();
+
+    /* 0x8 */ bool _8;
+    /* 0C */ Koopa* mParent;
+};
diff --git a/include/Game/Boss/KoopaFunction.hpp b/include/Game/Boss/KoopaFunction.hpp
index a7b36de76..206a3d476 100644
--- a/include/Game/Boss/KoopaFunction.hpp
+++ b/include/Game/Boss/KoopaFunction.hpp
@@ -1,7 +1,25 @@
 #pragma once
 
+#include "Game/Boss/Koopa.hpp"
 #include "Game/Map/KoopaBattleMapStair.hpp"
+#include "JSystem/JGeometry/TVec.hpp"
 
 namespace KoopaFunction {
     s32 registerBattleMapStair(KoopaBattleMapStair*);
-};
+    void startRecoverKoopaArmor(Koopa*);
+    void startRecoverKoopaTailThorn(Koopa*);
+    void endFaceCtrl(Koopa*, s32);
+    void initKoopaCamera(Koopa*, const char*);
+    void endKoopaCamera(Koopa*, const char*, bool, s32);
+    void setKoopaPos(Koopa*, const char*);
+    void startKoopaCamera(Koopa*, const char*);
+    void startKoopaTargetCamera(Koopa*, const char*);
+    void startFaceCtrl(Koopa*);
+    bool isKoopaVs1(const Koopa*);
+    bool isKoopaVs2(const Koopa*);
+    bool isKoopaLv3(const Koopa*);
+    bool isKoopaVs3(const Koopa*);
+    void* getKoopaPlanetShadow(Koopa*);
+    LiveActor* getKoopaPowerUpSwitch(Koopa*);
+    TVec3f* getPlanetCenterPos(const Koopa*);
+};  // namespace KoopaFunction
diff --git a/include/Game/Boss/KoopaPlanetShadow.hpp b/include/Game/Boss/KoopaPlanetShadow.hpp
new file mode 100644
index 000000000..83df02bd8
--- /dev/null
+++ b/include/Game/Boss/KoopaPlanetShadow.hpp
@@ -0,0 +1,17 @@
+#pragma once
+
+#include "Game/Boss/Koopa.hpp"
+#include "Game/LiveActor/LiveActor.hpp"
+#include "Game/Util/JMapInfo.hpp"
+#include "revolution/mtx.h"
+class KoopaPlanetShadow : public LiveActor {
+public:
+    KoopaPlanetShadow(const Koopa*);
+
+    virtual void init(const JMapInfoIter&);
+    virtual void calcAndSetBaseMtx();
+
+
+    /* 0x8c */  const Koopa* mParent;
+    /* 0x90 */  MtxPtr mParentJointMtx;
+};
diff --git a/include/Game/Boss/KoopaSequencer.hpp b/include/Game/Boss/KoopaSequencer.hpp
new file mode 100644
index 000000000..5c2f4b89b
--- /dev/null
+++ b/include/Game/Boss/KoopaSequencer.hpp
@@ -0,0 +1,21 @@
+#pragma once
+
+#include "Game/Boss/Koopa.hpp"
+#include "Game/Boss/KoopaDemoPowerUp.hpp"
+#include "Game/System/NerveExecutor.hpp"
+#include "Game/Util/JMapInfo.hpp"
+
+class KoopaSequencer : public NerveExecutor {
+public:
+    KoopaSequencer(const char*, s32);
+
+    virtual void init(Koopa*, const JMapInfoIter&);
+
+    Koopa* mParent;
+    KoopaDemoPowerUp* mDemoPowerUp;
+    s32 _10;
+    s32 _14;
+    s32 _18;
+    s32 _1C;
+    bool _20;
+};
diff --git a/src/Game/Boss/KoopaDemoJumpToPlanet.cpp b/src/Game/Boss/KoopaDemoJumpToPlanet.cpp
new file mode 100644
index 000000000..65babf84d
--- /dev/null
+++ b/src/Game/Boss/KoopaDemoJumpToPlanet.cpp
@@ -0,0 +1,49 @@
+#include "Game/Boss/KoopaDemoJumpToPlanet.hpp"
+#include "Game/Boss/Koopa.hpp"
+#include "Game/Boss/KoopaFunction.hpp"
+#include "Game/LiveActor/Nerve.hpp"
+#include "Game/Util/ActorSwitchUtil.hpp"
+#include "Game/Util/LiveActorUtil.hpp"
+#include "Game/Util/NerveUtil.hpp"
+#include "Game/Util/PlayerUtil.hpp"
+
+namespace NrvKoopaDemoJumpToPlanet {
+    NEW_NERVE(KoopaDemoJumpToPlanetNrvStart, KoopaDemoJumpToPlanet, Start);
+    NEW_NERVE(KoopaDemoJumpToPlanetNrvFall, KoopaDemoJumpToPlanet, Fall);
+}
+
+KoopaDemoJumpToPlanet::KoopaDemoJumpToPlanet(Koopa* pKoopa) : NerveExecutor("Demo[惑星までジャンプ]"), mParent(pKoopa) {}
+
+void KoopaDemoJumpToPlanet::init() {
+    KoopaFunction::initKoopaCamera(mParent, "ウェイト（惑星までジャンプ）");
+    KoopaFunction::initKoopaCamera(mParent, "落下（惑星までジャンプ）");
+    KoopaFunction::initKoopaCamera(mParent, "ワープ後（惑星までジャンプ）");
+    initNerve(&NrvKoopaDemoJumpToPlanet::KoopaDemoJumpToPlanetNrvStart::sInstance);
+}
+
+void KoopaDemoJumpToPlanet::kill() {
+    _8 = true;
+    KoopaFunction::endKoopaCamera(mParent, "ウェイト（惑星までジャンプ）", false, -1);
+    KoopaFunction::endKoopaCamera(mParent, "落下（惑星までジャンプ）", false, -1);
+    KoopaFunction::endKoopaCamera(mParent, "ワープ後（惑星までジャンプ）", false, -1);
+}
+
+void KoopaDemoJumpToPlanet::startReady() {
+    MR::onSwitchB(mParent);
+}
+
+void KoopaDemoJumpToPlanet::exeStart() {
+    if(MR::isFirstStep(this)) {
+        return;
+    }
+    KoopaFunction::setKoopaPos(mParent, "戦闘開始（クッパ）");
+    MR::setPlayerPosAndWait("戦闘開始（マリオ）");
+    KoopaFunction::startKoopaCamera(mParent, "落下（惑星までジャンプ）");
+    MR::startAction(mParent, "JumpSoon");
+    KoopaFunction::startFaceCtrl(mParent);
+    setNerve(&NrvKoopaDemoJumpToPlanet::KoopaDemoJumpToPlanetNrvFall::sInstance);
+}
+
+void KoopaDemoJumpToPlanet::exeFall() {
+
+}
diff --git a/src/Game/Boss/KoopaDemoPowerUp.cpp b/src/Game/Boss/KoopaDemoPowerUp.cpp
new file mode 100644
index 000000000..4e3274f5e
--- /dev/null
+++ b/src/Game/Boss/KoopaDemoPowerUp.cpp
@@ -0,0 +1,81 @@
+#include "Game/Boss/KoopaDemoPowerUp.hpp"
+#include "Game/Boss/KoopaFunction.hpp"
+namespace NrvKoopaDemoPowerUp {
+    NEW_NERVE(KoopaDemoPowerUpNrvWaitDemo, KoopaDemoPowerUp, WaitDemo);
+    NEW_NERVE(KoopaDemoPowerUpNrvDemo, KoopaDemoPowerUp, Demo);
+}  // namespace NrvKoopaDemoPowerUp
+
+KoopaDemoPowerUp::KoopaDemoPowerUp(Koopa* pKoopa) : NerveExecutor("Demo[パワーアップ]"), mParent(pKoopa) {}
+
+void KoopaDemoPowerUp::init() {
+    KoopaFunction::initKoopaCamera(mParent, "パワーアップデモ");
+    KoopaFunction::initKoopaCamera(mParent, "最終パワーアップデモ");
+    MR::createCenterScreenBlur();
+    initNerve(&NrvKoopaDemoPowerUp::KoopaDemoPowerUpNrvWaitDemo::sInstance);
+}
+
+void KoopaDemoPowerUp::appear() {
+    _8 = false;
+    setNerve(&NrvKoopaDemoPowerUp::KoopaDemoPowerUpNrvWaitDemo::sInstance);
+}
+
+void KoopaDemoPowerUp::kill() {
+    _8 = true;
+    KoopaFunction::endKoopaCamera(mParent, "パワーアップデモ", false, -1);
+    KoopaFunction::endKoopaCamera(mParent, "最終パワーアップデモ", false, -1);
+}
+
+void KoopaDemoPowerUp::exeWaitDemo() {
+    bool v1 = MR::tryStartDemoMarioPuppetable(mParent, "パワーアップデモ");
+    if (!v1) {
+        return;
+    }
+    if (KoopaFunction::isKoopaVs1(mParent) || KoopaFunction::isKoopaVs2(mParent)) {
+        KoopaFunction::setKoopaPos(mParent, "パワーアップデモ（クッパ）");
+        MR::setPlayerPosAndWait("パワーアップデモ（マリオ）");
+        if (KoopaFunction::isKoopaLv3(mParent)) {
+            MR::startAction(mParent, "DemoKoopaPowerUpFinal");
+            KoopaFunction::startKoopaTargetCamera(mParent, "最終パワーアップデモ");
+            MR::onSwitchB(KoopaFunction::getKoopaPowerUpSwitch(mParent));
+        } else {
+            MR::startAction(mParent, "DemoKoopaPowerUp");
+            KoopaFunction::startKoopaTargetCamera(mParent, "パワーアップデモ");
+            MR::onSwitchA(KoopaFunction::getKoopaPowerUpSwitch(mParent));
+        }
+    } else {
+        KoopaFunction::setKoopaPos(mParent, "パワーアップデモＬｖ３（クッパ）");
+        MR::setPlayerPosAndWait("パワーアップデモＬｖ３（マリオ）");
+        MR::startAction(mParent, "DemoKoopaPowerUpFinal");
+        KoopaFunction::startKoopaTargetCamera(mParent, "最終パワーアップデモ");
+        MR::onSwitchA(KoopaFunction::getKoopaPowerUpSwitch(mParent));
+    }
+    MR::startBckPlayer("BattleWait", static_cast< const char* >(nullptr));
+    KoopaFunction::startRecoverKoopaArmor(mParent);
+    KoopaFunction::startRecoverKoopaTailThorn(mParent);
+    KoopaFunction::endFaceCtrl(mParent, -1);
+    setNerve(&NrvKoopaDemoPowerUp::KoopaDemoPowerUpNrvDemo::sInstance);
+}
+
+void KoopaDemoPowerUp::exeDemo() {
+    if (KoopaFunction::isKoopaLv3(mParent)) {
+        if (MR::isStep(this, 2)) {
+            MR::startCenterScreenBlur(140, 15.0f, 80, 5, 30);
+        }
+    } else {
+        if (MR::isStep(this, 65)) {
+            MR::startCenterScreenBlur(135, 15.0f, 80, 5, 30);
+        }
+    }
+    if (MR::isActionEnd(mParent)) {
+        if (KoopaFunction::isKoopaVs3(mParent) || KoopaFunction::isKoopaLv3(mParent)) {
+            KoopaFunction::endKoopaCamera(mParent, "最終パワーアップデモ", false, -1);
+        } else {
+            KoopaFunction::endKoopaCamera(mParent, "パワーアップデモ", false, -1);
+        }
+        MR::endDemo(mParent, "パワーアップデモ");
+    }
+    TVec3f v1 = mParent->mGravity.negateInline();
+    MR::appearStarPieceToDirection(mParent, mParent->mPosition, v1, 10, 50.0f, 60.0f, false);
+    MR::startSound(mParent, "SE_OJ_STAR_PIECE_BURST", -1, -1);
+    kill();
+}
diff --git a/src/Game/Boss/KoopaPlanetShadow.cpp b/src/Game/Boss/KoopaPlanetShadow.cpp
new file mode 100644
index 000000000..b73259f3c
--- /dev/null
+++ b/src/Game/Boss/KoopaPlanetShadow.cpp
@@ -0,0 +1,39 @@
+#include "Game/Boss/KoopaPlanetShadow.hpp"
+#include "Game/Boss/KoopaFunction.hpp"
+#include "Game/LiveActor/LiveActor.hpp"
+#include "Game/Util/JMapInfo.hpp"
+#include "Game/Util/JointUtil.hpp"
+#include "Game/Util/LiveActorUtil.hpp"
+#include "Game/Util/MathUtil.hpp"
+#include "Game/Util/MtxUtil.hpp"
+#include "Game/Util/ObjUtil.hpp"
+#include "JSystem/JGeometry/TMatrix.hpp"
+#include "JSystem/JGeometry/TVec.hpp"
+
+#include <cstddef>
+
+KoopaPlanetShadow::KoopaPlanetShadow(const Koopa* pKoopa) : LiveActor("惑星用の影"), mParent(pKoopa), mParentJointMtx(nullptr){};
+
+void KoopaPlanetShadow::init(const JMapInfoIter& pIter) {
+    initModelManagerWithAnm("KoopaPlanetShadow", nullptr, false);
+    MR::connectToSceneEnemyDecoration(this);
+    MR::invalidateClipping(this);
+    mParentJointMtx = MR::getJointMtx(mParent, "Hip1");
+    makeActorDead();
+}
+
+void KoopaPlanetShadow::calcAndSetBaseMtx() {
+    TVec3f v1(mParentJointMtx[0][3], mParentJointMtx[1][3], mParentJointMtx[2][3]);
+    TVec3f* centerPos = KoopaFunction::getPlanetCenterPos(mParent);
+    TVec3f v2(v1 - *centerPos);
+
+    if (MR::isNearZero(v2, 0.001f)) {
+        return;
+    }
+
+    MR::normalize(&v2);
+    TPos3f v3;
+    v3.identity();
+    MR::makeMtxUpFrontPos(&v3, v2, mParent->_8C, *centerPos);
+    MR::setBaseTRMtx(this, v3);
+}
diff --git a/src/Game/Boss/KoopaSequencer.cpp b/src/Game/Boss/KoopaSequencer.cpp
new file mode 100644
index 000000000..5ea328f9d
--- /dev/null
+++ b/src/Game/Boss/KoopaSequencer.cpp
@@ -0,0 +1,15 @@
+#include "Game/Boss/KoopaSequencer.hpp"
+#include "Game/Boss/Koopa.hpp"
+#include "Game/Boss/KoopaDemoPowerUp.hpp"
+#include "Game/System/NerveExecutor.hpp"
+#include "Game/Util/JMapInfo.hpp"
+#include "revolution/types.h"
+
+KoopaSequencer::KoopaSequencer(const char* pName, s32 pNum)
+    : NerveExecutor(pName), mParent(nullptr), mDemoPowerUp(nullptr), _10(0), _14(0), _18(1), _1C(pNum), _20(false) {}
+
+void KoopaSequencer::init(Koopa* pParent, const JMapInfoIter& pIter) {
+    mParent = pParent;
+    mDemoPowerUp = new KoopaDemoPowerUp(mParent);
+    mParent->init(pIter);
+}