Hooray for Gir! Gir is one of the most adorable Nickelodean characters from the old show, Invader Zim. He is widely adored by most teenagers (Myself included :P) even after the show stopped airing on Nick's main network.
DragoArt members upload artwork and drawing tutorials! They are also allowed to leave comments on tutorials, profiles, etc. Many more features, as well; it's way better than just being a boring guest!