Whoever made this is an absolute genius. In the red corner are the Avengers - Hulk, Thor and Captain America. And in the blue corner, are - Major Glory, The Infraggable Krunk, and Val Hallen, or as they're known together - Justice Friends. Justice Friends who? Duh! Obviously, you've not been watching the most cool cartoon eva - Dexter's Lab. Here's the mashup I've been going gaga about.
Original artist: Michael Avon Oeming
More on Justice Friends can be found here (Wiki link)