Blockheads Alter Ego is the evil curiosity inside him that convinces him to do bad. Alter Ego only appears in one episode so far, which is episode 11, Persuasion. He is first seen when Blockhead breaks into a small store and steals an owl clock. As Blockhead talks about all of the good he will do for Ghostmas, Alter Ego tells him that Ghostmas is really about spreading the hatred, not the love. Then, at the diner, when Blockhead is torturing a small family, Alter Ego convinces him to play in the power lines.