Well, the first character that came to mind for non-anime was Bill Cipher from Gravity Falls...and if you've ever seen Gravity Falls...you'd know that he's a demon who can poses people, invade their minds, take over the universe, and be an all-around bad guy. And the first for anime to come to mind was Edward Elric. If we're talking about meeting these characters, it'd be safer for the universe if I went with Ed (although I would force him to teach me alchemy, and that may result in me going insane and causing havoc all around the world). But I like them equally, I suppose.

I don't think I even have a non-anime related animated character that I even consider a "favorite".