Aang the Last Air Bender caricature

After seeing The Legend of Korra, the mini series based on reincarnated successor to Aang from the original animated series AVATAR.  Which was based around a little kid with arrow tattoos found frozen in a massive block of ice and called upon to save the world, arguably the greatest cartoon Nickelodeon has produced since The Ren and Stimpy Show and Rocko's Modern Life to site a couple of examples of great and underrated shows.

Legend of Korra- check it out, if you haven't already.