Just took a walk down memory lane and recalled "I am Weasel" and subsequently went over to "Cow and Chicken" and then of course the Red Guy with his hilarious aliases.

I've made a list of the ones I remember:

Dr. Lax Slax
Ben Panced
Seymour Butts
Mr. Lackapants
Mrs. Bare Derierre
Officer Pantsoffski
Geraldo Rearviewa
Baron von Keinlederhosen
Dr. High Knee
Officer O'Fannyhee
Sir Pantsareoff

I knew there were tons more so I looked up a list and found several more, but also this one:

Ivan Panced

Somehow the pun eludes me here. Anyone care to enlighten me? O.o