That makes Grey Matter his least favorite of the original Ben 10 aliens. This alien form comes from the Galvan — a 6-inch-tall, physically feeble species that is also gifted with super-intelligence.

that it won't really matter. Just strap on your Omnitrix and enjoy the ride. "Ben 10: Alien Swarm" premieres Nov. 25 at 6 p.m. CST on the Cartoon Network.

Along the way, they can also transform into favorite aliens like Grey Matter, Stinkfly, and Four Arms. The first half of the two-part series finale of Ben 10: Ultimate Alien premiere Saturday ...