Hmmm. I would be in TRC so I could hang out with Fai and Syaoran, or in Saiyuki, where I could hang out with Goku and Genjo Sanzo. I would have to be my own character. I would be one of those crazy people that seem to pop up everywhere.
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Like... Miyuki-chan....
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Mainly because I can't stay in one place for very long. *Unless there's a good video game in front of me.*
But if we're talking American cartoon shows, I'd say Avatar: The Last Airbender... I'm a dork but I love that show. I think it's adorable. I would still be my own random, almost hyper character and that would be fun!!!!!