Ultimate Forms

Ultimate Forms are evolved versions of some of Ben Tennyson's newer aliens. Some of them have completely change their physical appearance, while some only change their color with few improvements.

Activation
To activate this change, Ben presses the Ultimatrix symbol, causing it to grow four spikes. Ben is then consumed by green light and transforms into the form. Also, when a person asked if every alien in Ben`s playlist has an ultimate form, Dwayne McDuffie answered it by saying,"Wait and see" which is his way of answering a question that he is either not ready or doesn't want to anwser. This strongly implies that we may see new ultimate forms in the future.

Series
See: Ben 10: Ultimate Alien

Ultimate Forms

 * Ultimate Spidermonkey (appeared in Fame)
 * Ultimate Big Chill (appeared in Hit 'Em Where They Live and Escape From Aggregor)
 * Ultimate Cannonbolt (appeared in Too Hot To Handle)
 * Ultimate Echo Echo (Has not appeared in Ultimate Alien yet)


 * Ultimate Humongousaur (appeared in The Final Battle: Part 1(By Albedo), The Final Battle: Part 2, Too Hot To Handle and Hero Time)
 * Ultimate Swampfire (appeared in The Final Battle: Part 2)

Trivia

 * Every ultimate form has either a new or altered ability that the normal form didn't have.
 * It's quite possible that the Ultimate forms are a result of a method of bio-mutation. The one method of bio-mutation that makes these aliens(and possibly the rest) into a type of battle-ready, super species.
 * Albedo is responsible for the Ultimatrix's evolution/mutation ability.
 * Dwayne McDuffie confirmed that we should all "wait and see" what a human's ultimate form will be.
 * The "ultimate form' feature was not used in the Omnitrix because Azmuth only wanted the user to experience life as other species; not to turn them into a mutated form.