Avatar: Black Mage from 8-bit Theater. If you haven't seen this web comic, do it. Now. I'll wait ......

Sig: A line from a comedy sketch from The Firesign Theatre. Not many people have heard of them, and they're an acquired taste. They were big in the 60s-70s, so you may need a hit of acid or LSD to fully appreciate them.

Nick: Comes from a CCG I play. Also fits nicely with the Black Mage.