Chibi-Devil

Species: IMMORAL HELL SPAWN!
Timeline: Party Goers
Year of Birth: As old as time
Residence: Hell and/or someone's shoulder
First Appearance: Party Goers 17
Personality: Thinks he's all that, despite being around the size of your head. He slinks and crawls and whispers evil thoughts into your brain.
Special Abilities: When Chibi-Devil says, "You can say that again," the last person who said something will repeat what he/she just said. He tends to say it a lot, until said person will repeat what he/she said even when he doesn't say it. Only the truly strong-minded (and Masamune) can break out of the spell. He can also climb up someone's back without them feeling it.
Flaws: He hates having to move of his own accord. He's immortal, but hardly invincible, and usually a good thwack can get him off your back... for an hour, anyway.
Friends: None
Enemies: Everyone
Creator: Luigi of the Pipes

History: Chibi-Devil is the model for the "Lucifer as a dragon" theory. Being a model must suck, since he's been scaled down to about 1/1000th.

He first appeared in Party Goers 17, after the Party Goers had descended into Hell in search of a missing piece of Guisseppie. He revealed himself as Luigi of the Pipes's arch-nemesis, though he hasn't done a whole lot to prove it.

Since Party Goers 17, he has made a few other appearances (at the behest of Masamune), usually teaming up with the villain of the moment and doing... nothing.