Huh... I wonder how tall he is, seeing as how Laharl accused him of being the Overlord that stole his height... --N-F 20:49, October 10, 2010 (UTC)
So, while playing Hyperdimension Neptunia Rebirth 3, I might have found a cameo of Mao? There was an event in Planeptune in chapter one which featured a character (name forgotten) who had the same clothing as Mao and talkes about returning to the Netherworld - however, he wore a mask, so the face wasn't visible.
While it is just a Sprite, it could be a nod towards the Disgaea Series ; The HN series is full with cameos and references after all :P