diff --git a/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp b/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
index 87c896dc..d6512c8b 100644
--- a/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
+++ b/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
@@ -577,10 +577,10 @@ void LegoCarBuildAnimPresenter::RotateAroundYAxis(MxFloat p_angle)
 		newRotation.EqualsHamiltonProduct(currentRotation, additionalRotation);
 
 		if (newRotation[3] < 0.9999) {
-			rotationKey->FUN_100739a0(TRUE);
+			rotationKey->SetActive(TRUE);
 		}
 		else {
-			rotationKey->FUN_100739a0(FALSE);
+			rotationKey->SetActive(FALSE);
 		}
 
 		m_platformAnimNodeData->GetRotationKey(0)->SetX(newRotation[0]);
diff --git a/LEGO1/lego/legoomni/src/video/legoanimpresenter.cpp b/LEGO1/lego/legoomni/src/video/legoanimpresenter.cpp
index 54b1da70..852263fc 100644
--- a/LEGO1/lego/legoomni/src/video/legoanimpresenter.cpp
+++ b/LEGO1/lego/legoomni/src/video/legoanimpresenter.cpp
@@ -221,10 +221,10 @@ void LegoAnimPresenter::FUN_100692b0()
 
 		for (LegoU32 i = 0; i < numActors; i++) {
 			LegoChar* str = GetVariableOrIdentity(m_anim->GetActorName(i), NULL);
-			undefined4 unk0x04 = m_anim->GetActorUnknown0x04(i);
+			LegoU32 actorType = m_anim->GetActorType(i);
 			LegoROI* roi = NULL;
 
-			if (unk0x04 == 2) {
+			if (actorType == LegoAnimActorEntry::e_actorType2) {
 				LegoChar* src;
 				if (str[0] == '*') {
 					src = str + 1;
@@ -239,7 +239,7 @@ void LegoAnimPresenter::FUN_100692b0()
 					roi->SetVisibility(FALSE);
 				}
 			}
-			else if (unk0x04 == 4) {
+			else if (actorType == LegoAnimActorEntry::e_actorType4) {
 				LegoChar* baseName = new LegoChar[strlen(str)];
 				strcpy(baseName, str + 1);
 				strlwr(baseName);
@@ -254,7 +254,7 @@ void LegoAnimPresenter::FUN_100692b0()
 				delete[] baseName;
 				delete[] und;
 			}
-			else if (unk0x04 == 3) {
+			else if (actorType == LegoAnimActorEntry::e_actorType3) {
 				LegoChar* lodName = new LegoChar[strlen(str)];
 				strcpy(lodName, str + 1);
 
@@ -300,9 +300,9 @@ void LegoAnimPresenter::FUN_100695c0()
 
 		for (LegoU32 i = 0; i < numActors; i++) {
 			if (FUN_100698b0(rois, m_anim->GetActorName(i)) == FALSE) {
-				undefined4 unk0x04 = m_anim->GetActorUnknown0x04(i);
+				LegoU32 actorType = m_anim->GetActorType(i);
 
-				if (unk0x04 == 5 || unk0x04 == 6) {
+				if (actorType == LegoAnimActorEntry::e_actorType5 || actorType == LegoAnimActorEntry::e_actorType6) {
 					LegoChar lodName[256];
 					const LegoChar* actorName = m_anim->GetActorName(i);
 
diff --git a/LEGO1/lego/sources/anim/legoanim.cpp b/LEGO1/lego/sources/anim/legoanim.cpp
index dc3c21da..8ec3ee2d 100644
--- a/LEGO1/lego/sources/anim/legoanim.cpp
+++ b/LEGO1/lego/sources/anim/legoanim.cpp
@@ -1063,7 +1063,7 @@ LegoResult LegoAnim::Read(LegoStorage* p_storage, LegoS32 p_parseScene)
 
 			m_modelList[i].m_name[length] = '\0';
 
-			if (p_storage->Read(&m_modelList[i].m_unk0x04, sizeof(undefined4)) != SUCCESS) {
+			if (p_storage->Read(&m_modelList[i].m_type, sizeof(LegoU32)) != SUCCESS) {
 				goto done;
 			}
 		}
@@ -1124,7 +1124,7 @@ LegoResult LegoAnim::Write(LegoStorage* p_storage)
 				goto done;
 			}
 
-			if (p_storage->Write(&m_modelList[i].m_unk0x04, sizeof(m_modelList[i].m_unk0x04)) != SUCCESS) {
+			if (p_storage->Write(&m_modelList[i].m_type, sizeof(m_modelList[i].m_type)) != SUCCESS) {
 				goto done;
 			}
 		}
@@ -1159,10 +1159,10 @@ const LegoChar* LegoAnim::GetActorName(LegoU32 p_index)
 
 // FUNCTION: LEGO1 0x100a0f40
 // FUNCTION: BETA10 0x1018023c
-undefined4 LegoAnim::GetActorUnknown0x04(LegoU32 p_index)
+LegoU32 LegoAnim::GetActorType(LegoU32 p_index)
 {
 	if (p_index < m_numActors) {
-		return m_modelList[p_index].m_unk0x04;
+		return m_modelList[p_index].m_type;
 	}
 
 	return 0;
diff --git a/LEGO1/lego/sources/anim/legoanim.h b/LEGO1/lego/sources/anim/legoanim.h
index 9b81b531..372128b5 100644
--- a/LEGO1/lego/sources/anim/legoanim.h
+++ b/LEGO1/lego/sources/anim/legoanim.h
@@ -30,9 +30,9 @@ public:
 	LegoU32 ShouldSkipInterpolation() { return m_flags & c_skipInterpolation; }
 
 	// FUNCTION: BETA10 0x100739a0
-	void FUN_100739a0(MxS32 p_param)
+	void SetActive(MxS32 p_active)
 	{
-		if (p_param) {
+		if (p_active) {
 			m_flags |= c_active;
 		}
 		else {
@@ -289,8 +289,16 @@ protected:
 
 // SIZE 0x08
 struct LegoAnimActorEntry {
-	LegoChar* m_name;     // 0x00
-	undefined4 m_unk0x04; // 0x04
+	enum {
+		e_actorType2 = 2,
+		e_actorType3 = 3,
+		e_actorType4 = 4,
+		e_actorType5 = 5,
+		e_actorType6 = 6,
+	};
+
+	LegoChar* m_name; // 0x00
+	LegoU32 m_type;   // 0x04
 };
 
 // TODO: Possibly called `LegoCameraAnim(ation)`?
@@ -338,7 +346,7 @@ public:
 	virtual LegoResult Read(LegoStorage* p_storage, LegoS32 p_parseScene); // vtable+0x10
 
 	const LegoChar* GetActorName(LegoU32 p_index);
-	undefined4 GetActorUnknown0x04(LegoU32 p_index);
+	LegoU32 GetActorType(LegoU32 p_index);
 
 	// FUNCTION: BETA10 0x1005abf0
 	LegoAnimScene* GetCamAnim() { return m_camAnim; }