Ben 10: Ultimate Alien is an upcoming American animated televisheni series that will be the third incarnation of Cartoon Network's Ben 10 franchise. It is slated to premiere after the series finale of Ben 10: Alien Force, which was on March 26, 2010. The onyesha itself will air on April 23, 2010 and will take place one mwaka after the finale. Before the title, Ultimate Alien, it went under the working title of Ben 10: Evolution.
It's been one mwaka since Ben defeated Vilgax. The new animated series follows sixteen-year-old Ben Tennyson as his secret identity has been revealed to the world, making him an "international mega-star super hero", beloved kwa kids all over the world, but distrusted kwa many adults. Now armed with the mysterious new Omnitrix called "Ultimatrix". Ben Tennyson, along with Gwen and Kevin, will see action in places they have never been before.

Ultimatrix

The upgraded form of the Omnitrix. It has all the powers and abilities of the original Omnitrix plus a powerful new one, the power and ability to turn Ben's aliens into their ultimate forms, much, much stronger versions with much stronger and zaidi powerful powers and abilities. To activate this change, Ben presses the Omnitrix symbol, causing it to grow four spokes and transform the alien into their ultimate form.