The Ultimatrix is an alien divice created by Albeto, based off of the Omnitrix. It alows the wearer to transform into multiple aliens (Originally it had Ten, but latter on more were added). It was originally woren by Albeto, to deffeat Ben, but later on Ben took the Ultimatrix after he blew it up to destroy Vilgax. The Ultimatrix differs from the Omnitrix because it allows the wearer to evolve the form into the Ultimate Form, where evolution would take the alien after times of War, Natural Dangers, ect.

List of Exosuits contained in the Ultimatrix:

Notice: The Ultimatrix symbol is shown on Ben's Suit, and Ultimate Kevin is caused by Kevin trying to absorb the energy in the Ultimatrix.