2. King Hippo, Punch-Out! (1984) It's been more than 20 years since the original Punch-Out! was released, yet we still don't know why King Hippos' bandaged belly button is his Achilles heel. We smell a conspiracy. Still, we give him props for stepping into the ring and putting up a good fight, even though he's one of the easier bosses to defeat in the game (once you knew his secret, which everyone eventually did). But making his pants fall off in the process? That's just cold, Nintendo.