10 Best Supervillains Who Only Appear Once

Because of BearBoarGuy's monstrous appearance, people naturally assume he's an imbecile. However, he actually has a business degree (and boasts about it to Spider-Man while the wallcrawler punches him in the face). Despite his gargantuan size, Deadpool effortlessly defeated the beastly criminal by blasting him eight times in the backside.

As soon as BearBoarGuy appears, the readers know he's supposed to be a joke. When he pops up, the panel describes him as "Your favourite Marvel villain you've never heard of!" The creative team behind the issue also leave a note about BearBoarGuy reading, "This is his first appearance. Be nice!" Sadly, it seems like the comic couldn't take its own advice since he was killed off several pages later.

Despite his tiny appearance, BearBoarGuy made an impression, purely because of his absurd name. In case you were wondering, his pseudonym is a parody of the South Park character, ManBearPig. This supervillain is so silly, it would be hilarious to see him again. But since he kicked the bucket at the end of the same issue he debuted in, we probably won't see him reappear.