Iroh from Avatar the Last Airbender (which is the prequel to the legend of Korra). His a pretty funny and cool old guy.
[spoiler]I count Avatar as anime since the show was inspired and is very similar to anime and eastern culture as well as being similar to western culture. Deal with it![/spoiler]
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I don't think I could pick just one character to be my favorite, I have many characters tied for 1st :)