So who is he?

A man in a red robe and yellow hat stands with arms crossed, then turns to look at a man with a large orange afro who raises a hand, then points and grins maniacally. The man in red reacts with a scream as a small man in a blue hat appears behind him, looking distressed, before the man in red regains his composure and glares at the small man. The scene takes place in a dimly lit room with large, circular mechanical structures in the background.