Dr. Doomsday

Dr. Doomsday is the archenemy of Radioactive Squid Woman, both made up by Buster. He had a "pickle factory accident" because of Radioactive Squid Woman, and vows revenge for it.

Arthur

 * "Jenna's Bedtime Blues"

Trivia

 * He is a parody of from ', but his name is a combination of  and, from ' and Superman, respectively.