HandUnit

HandUnit is character that appeared in SMG4: Freddy's Ultimate Custom Spaghetteria. He appears at 4 am. He tells Mario that he is in the sister location. He summons Donkey Kong to play casual bongos and says  "That Mozart shit right there". Mario than gets angry and throws a air vent at him.

He is later at the Rockstars concert again saying "That Mozart shit right there".