diff --git a/CMakeLists.txt b/CMakeLists.txt
index d70c0626..3650c718 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -179,6 +179,7 @@ add_library(lego1 SHARED
   LEGO1/mxtimer.cpp
   LEGO1/mxtransitionmanager.cpp
   LEGO1/mxtype17notificationparam.cpp
+  LEGO1/mxunknown100dbdbc.cpp
   LEGO1/mxvariable.cpp
   LEGO1/mxvariabletable.cpp
   LEGO1/mxvideomanager.cpp
diff --git a/LEGO1/legoomni.cpp b/LEGO1/legoomni.cpp
index 53bb07ef..cd3438a7 100644
--- a/LEGO1/legoomni.cpp
+++ b/LEGO1/legoomni.cpp
@@ -21,6 +21,7 @@
 #include "mxomnicreateparam.h"
 #include "mxticklemanager.h"
 #include "mxtransitionmanager.h"
+#include "mxunknown100dbdbc.h"
 
 DECOMP_SIZE_ASSERT(LegoWorldList, 0x18);
 
@@ -385,7 +386,7 @@ void LegoOmni::Init()
 	MxOmni::Init();
 	m_unk0x68 = 0;
 	m_inputMgr = NULL;
-	m_unk0x6c = 0;
+	m_renderMgr = NULL;
 	m_gifManager = NULL;
 	m_worldList = NULL;
 	m_currentWorld = NULL;
@@ -443,9 +444,9 @@ void LegoOmni::Destroy()
 		m_gifManager = NULL;
 	}
 
-	if (m_unk0x6c) {
-		// delete m_unk0x6c; // TODO
-		m_unk0x6c = NULL;
+	if (m_renderMgr) {
+		delete m_renderMgr;
+		m_renderMgr = NULL;
 	}
 
 	if (m_inputMgr) {
@@ -523,15 +524,16 @@ MxResult LegoOmni::Create(MxOmniCreateParam& p_param)
 		}
 	}
 
-	// TODO: there are a few more classes here
+	m_renderMgr = new MxUnknown100dbdbc();
 	m_gifManager = new GifManager();
+	// TODO: there is another class here
 	m_plantManager = new LegoPlantManager();
 	m_animationManager = new LegoAnimationManager();
 	m_buildingManager = new LegoBuildingManager();
 	m_gameState = new LegoGameState();
 	m_worldList = new LegoWorldList(TRUE);
 
-	if (m_unk0x6c && m_gifManager && m_worldList && m_plantManager && m_animationManager && m_buildingManager) {
+	if (m_renderMgr && m_gifManager && m_worldList && m_plantManager && m_animationManager && m_buildingManager) {
 		// TODO: initialize a bunch of MxVariables
 		RegisterScripts();
 		FUN_1001a700();
diff --git a/LEGO1/legoomni.h b/LEGO1/legoomni.h
index 4edaeb35..69f6964a 100644
--- a/LEGO1/legoomni.h
+++ b/LEGO1/legoomni.h
@@ -27,6 +27,7 @@ class MxAtomId;
 class MxBackgroundAudioManager;
 class MxDSFile;
 class MxTransitionManager;
+class MxUnknown100dbdbc;
 
 extern MxAtomId* g_copterScript;
 extern MxAtomId* g_dunecarScript;
@@ -116,7 +117,7 @@ class LegoOmni : public MxOmni {
 
 private:
 	undefined4* m_unk0x68;                       // 0x68
-	undefined4 m_unk0x6c;                        // 0x6c
+	MxUnknown100dbdbc* m_renderMgr;              // 0x6c
 	LegoInputManager* m_inputMgr;                // 0x70
 	GifManager* m_gifManager;                    // 0x74
 	LegoWorldList* m_worldList;                  // 0x78
diff --git a/LEGO1/mxunknown100dbdbc.cpp b/LEGO1/mxunknown100dbdbc.cpp
new file mode 100644
index 00000000..a420454a
--- /dev/null
+++ b/LEGO1/mxunknown100dbdbc.cpp
@@ -0,0 +1,11 @@
+#include "mxunknown100dbdbc.h"
+
+#include "decomp.h"
+
+DECOMP_SIZE_ASSERT(MxUnknown100dbdbc, 0x14)
+
+// STUB: LEGO1 0x100a6fd0
+MxUnknown100dbdbc::MxUnknown100dbdbc()
+{
+	// TODO
+}
diff --git a/LEGO1/mxunknown100dbdbc.h b/LEGO1/mxunknown100dbdbc.h
new file mode 100644
index 00000000..157058a7
--- /dev/null
+++ b/LEGO1/mxunknown100dbdbc.h
@@ -0,0 +1,17 @@
+#ifndef MXUNKNOWN100DBDBC_H
+#define MXUNKNOWN100DBDBC_H
+
+#include "decomp.h"
+#include "mxtypes.h"
+
+// VTABLE: LEGO1 0x100dbdbc
+// SIZE 0x14
+class MxUnknown100dbdbc {
+public:
+	MxUnknown100dbdbc();
+
+private:
+	undefined m_unk0x4[0x14]; // TODO: change to 0x10 once scalar deconstructor is added
+};
+
+#endif // MXUNKNOWN100DBDBC_H