If you want to do a full traditional 2D animated frame by frame cartoon it may be better to try it in Anime studio or
Toon Boon, which is really good for that sort of work from what I hear. You could even use flash which is better for it(or at least older versions where).
You can of course do it after effects but its not really built around frame by frame animation workflow so you would develop it your self. The look of it is more based on how you or an artist design the character and how you animate it.
hope the spot comes out cool
Greg
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