I guess I probably watched too much tv as a kid, but these were (are) my personal favourites. I reckon there ain't a problem this team couldn't fix. Penny gadget with her book containing all knowledge, Rainbow Brite with near godess-level powers of life and death, Papa Smurf with his gnomic wisdom and leadership, Ullysses for diplomatic/seduction missions, and of course Optimus Prime for situations that require sheer blunt force trauma.
Incidentally collective thinkers, I found a resource on DA that you might find useful (or at least fun to look at). It's a mine of old model sheets and concept art for animated tv series and movies. Here's the link: