Ben 10: Ultimate Alien

Ben 10: Ultimate Alien is a sequel series to Ben 10: Alien Force. It premiered on April 23, 2010. The style in this series is different from the Alien Force series. This follows a now 16-year old Ben and Gwen, and 17-year old Kevin. Ben's secret identity has been revealed to the world and he is now an international mega-star super hero, loved by kids all-over the world, but distrusted by many adults such as reporter Will Harangue. Armed with a mysterious more powerful new Omnitrix, called the Ultimatrix, and being hunted by rogue alien threats and human mercenaries and assassins hired by opposing adults, Ben 10 will be in places he has never been before. It went under the working title, Ben 10: Evolution.The main enemy is named Aggregor who is after a 'ultimate prize'.

A new feature in the series is Ben's new car (as revealed in Ben 10: Alien Swarm), as well as a jet flown by Kevin.

Main characters

 * Ben Tennyson
 * Gwen Tennyson
 * Kevin Levin
 * Elena Validus

Villains

 * Aggregor
 * Argit
 * Buzz
 * Charmcaster
 * Dr. Animo
 * Forever Knights
 * Sir Dagonet
 * Hammer
 * King Urian
 * Overlord
 * Rojo
 * Rojo's Gang
 * Sevenseven
 * Ssserpent
 * Surgeon
 * The Stalker
 * Vulkanus
 * Will Harangue
 * Zombozo

Recurring characters

 * Julie Yamamoto
 * Max Tennyson
 * Carl Tennyson
 * Sandra Tennyson
 * Jimmy Jones

Neutral

 * Jennifer Nocturne
 * Cash
 * JT
 * Yeti
 * Oliver

Ultimatrix Aliens
(NOTE: As the UItimatrix was synced to the Omnitrix, it has access to all of the aliens that Ben has previously transformed into.)

New Aliens

 * AmpFibian
 * Armodrillo
 * NRG
 * Terraspin
 * Water Hazard

Ultimate Aliens

 * Ultimate Big Chill
 * Ultimate Cannonbolt
 * Ultimate Echo Echo
 * Ultimate Humongousaur
 * Ultimate Spidermonkey
 * Ultimate Swampfire

Original Aliens

 * Big Chill
 * Brainstorm
 * Cannonbolt
 * Chromastone
 * Echo Echo
 * Fourarms
 * Goop
 * Humongousaur
 * Jetray
 * Lodestar
 * Nanomech
 * Rath
 * Spidermonkey
 * Swampfire
 * Upchuck
 * Way Big
 * Alien X

Episodes
See: Ben 10: Ultimate Alien Episodes

Vehicles

 * Kevin's car
 * DX Mark 10
 * The Mecha-Vehicle
 * Rust Bucket

thumb|300px|rightOpening
The opening shows all the aliens Ben has ever turned into.

Trivia

 * It is the first series for Ben not to start-off with only ten aliens.