This video goes over the alien designs of all of the aliens introduced in Ben10 Alien Force and Ben10 Ultimate Alien (a.k.a. Ben10 Ultimate Alien Force). The design of these aliens have been modified in Heroes United, Ben10 Omniverse, and Ben10 Reboot.
Aliens shown in the video include: swampfire, echo echo, humungousaur, jetray, chromastone, brainstorm, spidermonkey, big chill, goop, alien x, lodestar, rath, nanomech, waterhazard, ampfibian, armodrillo, terraspin, nrg, clockwork, shocksquatch, eatle, jury rigg, ultimate echo echo, ultimate humungousaur, and ultimate spider monkey.

Artists: Some of the pictures seen in this video have been designed by online artist, others I have drawn myself.