Luchadeer

What podcast did this come from? WTF?

 I don't think it's from the bombcast. The first I remember seeing it is in the second or third "how to build a bomb" video from the beta days. I can't remember if it had a mask then either.
EDIT: In "how to build a bomb" episode 5, Luchadeer makes his first appearance. Link

He also likes to dance, all the time.

I love his cameo appearance during the madden special.. He was so informative.   Very knowledgable.