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This article is about the aliens. You might have been looking for the TV show.

Not only can I transform into anything you can, but I can also evolve those creatures to their Ultimate form.

Albedo, describing the Ultimate forms to Ben.[1]

Ultimate Forms are the evolved forms of various Ultimatrix aliens, used primarily by Ben in Ultimate Alien and Albedo in Alien Force and Omniverse.

Concept and Creation

The evolutionary function works by placing the DNA of the selected alien in a simulated scenario, subjecting them to the worst-case scenario over millions of theoretical years in order to "force" evolution.[DM 1] The resultant evolutionary adaptations to this simulated worst case scenario are then modified into the existing DNA of the selected alien, thus evolving it into the Ultimate form.

The method of this is the "survival of the fittest", in which simulated evolution ensures that the Ultimate forms are more combat-oriented than their normal forms. An example is Ultimate Humungousaur having his durable armor on both his head and abdomen, as well as a spiked mace at the end of his tail, which regular Humungousaur does not have.

The evolutionary function was added to the Ultimatrix by Albedo after stealing the prototype from Azmuth.[1][DM 1] When Azmuth saw the Ultimatrix for the first time, he commented that the function was "begging for trouble".[2] He was proven right later when the Ultimate forms gained some sentience and planned to free themselves from the Ultimatrix against Ben.[3]

The Ultimate forms are not found within the Codon Stream because, strictly speaking, they do not exist in the Prime Timeline as a collectible species. Rather, they are by-products of pre-existing alien DNA.[DM 2][DM 3][DJW 1]

Almost any DNA can be put through the evolution process.[DJW 2]


Original Ultimatrix

To activate an Ultimate form, Ben transformed into an alien and then pressed the Ultimatrix symbol (occasionally rotating it counterclockwise about 45 degrees before pressing), which resulted in four spikes protruding from the Ultimatrix diagonally. Ben was then consumed by a bright green energy field and went Ultimate.

Ben 10,000's Ultimatrix

To become Ultimate Ben, Ben twists the dial of the Ultimatrix and a wave of green light passes over him.

Recreated Ultimatrix

To activate the Ultimate form, Albedo selects an alien and activates the transformation, just like on the original Ultimatrix. However, he is immediately transformed into the Ultimate form directly of that alien without activating them in-between regular forms. Instead of green, the light Albedo is consumed in is red.

Whereas Ben usually reserves the Ultimate feature as a last resort, Albedo seemingly replaces the devolved forms of his aliens with them in order to gain the upper hand whenever he and Ben do battle.

Sentient Forms

In The Ultimate Sacrifice, the six Ultimate forms that Ben had used most by then gained sentience and demanded their freedom from the Ultimatrix, causing Ben to eventually make the decision to sacrifice his own life to let them escape. Azmuth was impressed by Ben's willingness to sacrifice himself and intervened, freeing the Ultimates while simultaneously saving Ben's life after which he took the Ultimates to a world where they would be free to roam by themselves.

Azmuth prevented the recurrence of the incident by modifying the Ultimatrix in such a way that the Ultimate forms, as with their normal forms, would simply be "empty shells" occupied by Ben's mind in order to prevent them from gaining sentience.



Ultimatrix (Future)

Ultimate ben character

Recreated Ultimatrix


Naming and Translations

Language Name Origin
Albanian [alien]+Më i Ri/Më e Re From 'më i ri/më e re' meaning 'the newest'
French Ultimate+[alien] From the original English name
Italian Ultra, Evolute (occasionally) Ultra forms, evolved forms
Polish Ostateczne Formy Ultimate Forms
Portuguese (Br) Formas Supremas Supreme Forms
Romanian [alien] + X “X” from the Ultimatrix’s X-like symbol when transformed into an ultimate alien
Spanish (HA) [alien]+Supremo
Máximo+[alien] (The Ultimate Heist)
From supremo, supreme
From máximo, maximum
Spanish (Spain) Ultimate+[alien] From the original English name


  • Some of the Ultimates have completely changed their physical appearance, while some (Cannonbolt, Way Big, Big Chill, etc) simply change their color with some minor additions.
  • Ben is a bit scared of the Ultimates the same way he used to be afraid of Ghostfreak, but thinks they are cool.[DM 4]
  • Ben felt discomfort whenever going Ultimate.[DM 5]
  • The original Ultimatrix's evolutionary feature had nothing to do with the wielder.[DM 6]
  • The evolutionary function drained the original Ultimatrix's battery quicker than regular transformations.[DM 7]
  • The first time the Ultimate function was used, Albedo turned the rim of the Ultimatrix symbol, causing the core to pop out, which he promptly pressed.[1] In some instances, Ben turned the symbol between 45 and 90 degrees counterclockwise before activating it, which doesn't activate the Ultimate function.
  • It was decided from the beginning of development on Omniverse that the current Omnitrix does not have an evolutionary feature.[DJW 3][DJW 4]
    • The Omnitrix is neither able to accept the evolved DNA of Ultimate forms[DJW 5] nor be transformed into an Ultimatrix by a Polymorphic Crystal.[DJW 6] Because of these factors, Ben will never regain the ability to transform into Ultimate Forms.[DJW 7]
  • If Ben 23 had the Ultimatrix, he would call his Ultimate forms "Monsterizer Forms".[DJW 8]
  • The Evolutionary Function can be used on the Ultimate forms themselves for seemingly infinite times, allowing them to evolve even further so that they can adapt to the situation around them. However, the resulting evolutions may not turn out the way the Ultimatrix's user would like.[DJW 9][DR 1]
  • Derrick J. Wyatt loved the concept of the evolved forms of Ben's aliens, but to him, calling them "Ultimate" would mean that the Ultimate forms themselves would have to be cooler than their regular counterparts. He found this to be probably totally impossible because he felt that there was no way to make 100% of them to be cooler, but one must push an evolved form as far as they can.[DJW 10]
    • Derrick believed that it was possible but not probable for Ultimate forms to be stronger than the Nemetrix aliens.[DJW 11]
    • Derrick found the idea of Ultimate forms existing as natural species in alternate timelines to be interesting and believed it would be possible.[DJW 12] One notable example of such a universe is the War Universe.[DJW 13]
  • Derrick oversaw the development of the Ultimate forms' designs in Omniverse from roughs to color. However, the only designs he worked on were Ultimate Albedo and some work on Ultimate Spidermonkey. As for the rest of the Ultimates featured in the show, they were designed by Steven Choi alongside Chap Yaep and Dou Hong.[DJW 14]


Dwayne McDuffie

Derrick J. Wyatt

Duncan Rouleau

Introduced in Ben 10 ArctiguanaBlitzwolferBuzzshockCannonboltDiamondheadDittoEvil Way Big (Destroy All Aliens)Eye GuyFour ArmsFrankenstrikeGhostfreakGrey MatterHeatblastRipjawsSnare-ohSpitterStinkflyUpchuckUpgradeWay BigWildmuttWildvineXLR8
Introduced in Alien Force Alien XBig ChillBrainstormChromastoneEcho EchoGoopHumungousaurJetrayLodestarNanomechRathSpidermonkeySwampfire
Introduced in Ultimate Alien AmpfibianArmodrilloChamalienClockworkEatleFasttrackJuryriggNRGShocksquatchTerraspinWater Hazard
Introduced in Omniverse AstrodactylAtomixBall WeevilBloxxBullfragCrashhopperFeedbackGravattackGutrotKickin HawkMole-StachePesky DustThe WorstToepickWalkatroutWhampire
Future Aliens SandboxShellheadSnakepit
Ultimate Aliens AlbedoArctiguanaBenBig ChillCannonboltEcho EchoGravattackHumungousaurRathSpidermonkeySwampfireWay BigWildmutt
Fusion Aliens Atomic-XBig ChuckCrashockerDiamond MatterFourmungousaurHeat JawsHumungoopsaurStink ArmsUprigg
Concept Fusion Aliens GravadactylXLRG
Competition Winners Alien Maker Contest WinnerMoyoInvinciblePortalerShadowmanStretcheleo
MAD ChromastoneFour ArmsHumungousaurJetrayNRGSwampfire
Total Access AntigraviteslaBob the BlobPlantapocalypse
Ben 10: Science Hero CaetSektoid TransformationShafarnianSteeler
Tim 10 BloxxFour ArmsHeatblastSkateasaurusUpchuckXLR8
Other Cartoon Network AlienEon (retconned)Evil Way Big (Cosmic Destruction)Fuel Run AlienGrendene AlienK-Zone AlienRobot AlienRocksSquidstrictor
Nemetrix Predators
Regular Predators BuglizardCrabdozerHypnotickMucilatorOmnivoraciousSlamwormTerroranchulaTyrannopedeVicetopus
Ultimate Forms Ultimate Panuncian
Non-Canon Tentaclaws
Transformation Gimmicks
SkurdUltimate Forms
Battle • Defenders • Gold (Omniverse) • Gold (Ultimate Alien) • Haywire • Omni-Plasm • Ultimized