Non is one of General Zod's gang, appearing in the movies Superman and Superman II. He is an evil Kryptonian, and on Earth has all of Superman's powers, including super strength and the ability to fly. He is the biggest and stupidest, and doesn't talk.
In "Lethal Weapons", Ursa, Zod, and Non were seen in The Drunken Clam during the time when Peter was starting fights with the New Yorkers so Lois would beat them up. When Peter said "Krypton sucks", Zod and his gang attacked him, but Lois threw all three of them into the Phantom Zone, where they drifted off into space much like the beginning of the movie, Superman.