The Two-Headed Monster appears in "Freak City." It runs into Jake's trap, the Crotch catapult. The Two-Headed Monster steps on the trigger, and Finn (as a foot) flies and hits it in its crotch. It then begins to yell in pain while Jake runs away with Finn
The Two-Headed Monster has two heads and blue skin. The left head has short hair on its head and one diamond shaped eye that is green with a light vertical line for a pupil, while the right head has stubble and three round purple eyes with pink pupils. It wears only a dark red or brown strap around its chest.
Our crotch—our evil crotch!