Ben 10 Planet

Alien X

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Alien X

Alien X- Ben 10 Omniverse


General Information
Species Celestialsapien
Home World Forge of Creation
Body Humanoid
Powers and Abilities
Abilities Omnipotence
Voice Actor Yuri Lowenthal
First Appearance X = Ben + 2

Alien X is the Omnitrix's DNA sample of a Celestialsapien from the Forge of Creation.

Ben acknowledges Alien X as his most powerful alien, but concedes that transforming into him is not worth the cost.

Alien X has three personalities: Serena, the voice of love and compassion, Bellicus, the voice of rage and aggression and Ben, the voice of reason. All three speak in unison when Alien X speaks.

As Serena and Bellicus have been arguing for eternity and before they had no tiebreaker, getting them to focus on any present task is difficult at best, leaving Alien X's body trapped in place until an agreement is made.

However, in Omniverse, Ben uses Alien X successfully to create a near exact copy of the universe when it gets destroyed by the Anihilaarg.


Alien X is a humanoid alien whose entire body is solid black (excluding his hands, which are white). He has tiny white star-like spots all over his body, giving him the appearance of a starry sky. His eyes are green and pupiless, and his forehead bears three horns. Later in the series it is implied that the starry form isn't simply aesthetic but that alien x and by extension all Celestialsapiens are or contain their own pocket universes as Paradox was able to travel inside Alien X and speak to him before reversing the transformation.

In Omniverse, Alien X is largely the same as before, but with a more "heroic" appearance. His chin is now bigger, his body is more muscular, his horns are smaller, and the stars on his body are brighter than before.

Alien X wears the Original Omnitrix/Ultimatrix/Omnitrix symbol on his chest.

Powers and Abilities

  • Alien X using his time waves to stop the flood
  • Alien X using his omnipotence to stop the Anihilaarg and re-create the universe
  • Duplicated Alien X

Alien X is omnipotent, being able to warp reality, time, and space with ease and at any level he wishes. Even his thoughts can become real.

Alien X can create time waves to reverse events, as seen in X = Ben + 2.

Alien X can create an entire universe at will, as seen in So Long, and Thanks for All the Smoothies. He is also very durable, as he was completely unharmed when the Anihilaarg destroyed the universe around him.

As shown in Universe vs. Tennyson, Alien X can self-duplicate and create galaxies to suck in other beings. He is also capable of high speed travel, superhuman strength, and the ability to grow to a gigantic size. He appears to be skilled at hand-to-hand combat.

Alien X possesses telekinesis, as shown in Weapon XI: Part 1 and is capable of deflecting attacks.


OV serena and bellicus

Bellicus, Serena, and Ben, the three personalities of Alien X

In order for Alien X to perform any action, including simple movement and transforming back, all three of his personalities must agree to do so. This has proven to be a major weakness, as Serena and Bellicus weren't interested in dealing with present affairs and wanted to finish past ones that weren't possible to deal with without Ben.

In Ben 10,000 Returns, the said weakness was referenced by Professor Paradox, where he revealed that there is an alternate timeline where Albedo transformed into Negative Alien X and was stuck motionless for nearly a year.

Alien X is vulnerable to having his powers absorbed, as Ben and Azmuth have implied that Darkstar and Osmosians can absorb his omnipotent powers.

Other Celestialsapiens can harm Alien X, as shown in Universe vs. Tennyson.

According to Derrick J.Wyatt, even Alien X can't survive on Anur Vladias.[1]


  • Alien X first appeared in X = Ben + 2, Alien X stopped a flood caused by a broken dam. After much fruitless argument, Ben convinces Serena and Bellicus to transform him into another alien (mostly by insulting them). Ben swore that he won't use Alien X again, as it is not worth the price.

  • In The Forge of Creation, Ben half heartedly turned into Alien X in hopes of locating the Forge of Creation before Ultimate Aggregor could obtain the universe's greatest power. After transforming, Bellicus and Serena start debating about other things as usual. Suddenly Paradox appears, telling Ben that he would not be able to convince Bellicus and Serena to help him out today. Also, Paradox puts himself in danger by going into the presence of Bellicus and Serena who almost voted to destroy him, and changes Ben back into his human form before they could come to a vote. In this episode, it was revealed that Ben had modified the Ultimatrix to lock the Alien X transformation, both to prevent him from accidentally morphing into the Celestialsapien in a battle and as a safety measure in case someone like Albedo stole the Ultimatrix. The only way to access Alien X was to use a pair of keys in Gwen and Kevin's possession.
  • In Ben 10,000 Returns, Alien X was mentioned by Paradox, where in an alternate timeline, Albedo turned into Alien X and was trapped motionless for nearly a year.
  • In The Ultimate Enemy: Part 2, Alien X appeared in the flashback.





Video Games

Ben 10 Alien Force: Vilgax Attacks

  • Alien X appeared in the game (only in the CGI movies/clips for Xbox 360, Wii, PS2 and PSP). He is not a playable alien, being replaced by Cannonbolt/Murk Upchuck.

Naming and Translations

Language Name Origin
Arabic الفضائي اكس Alfadaaiy Ax/Alfadae Iks, Alien X
Bulgarian Извънземно Хикс From Извънземно, alien and Хикс, the Bulgarian pronunciation of letter X
Burmese All-knowing
Chinese X超人 From X and 超人 (Chāo Rén), Superman
French Alien X From the original name
German Alien X From the original name
Greek Εξωγήνος Χ From Εξωγήνος, alien. Pronounced as eksoginos
Hungarian X lény From X, and lény, creature
Italian Alienics From alien and ics, the Italian pronunciation of letter X
Polish Obcy X From obcy, alien, and X
Portuguese (Br) Alien X From the original name
Romanian Extraterestrul X From extraterestru, alien, and X
Russian Супер Герой Х From cупер/super, super, герой/geroy, hero and X
Serbian Ванземаљац Икс/Vanzemaljac Iks From ванземаљац/Vanzemaljac, alien, and Iks, the Serbian pronunciation of letter X
Spanish (HA) Alienigena X
Extraterrestre X (Weapon XI: Part 1)
From alienigena, alien and X
From extraterrestre, extraterrestrial and X
Spanish (Spain) Alien X From the original name
Swedish Alien X From the original name


His name, made up of "Alien", a reference to being an extraterrestrial life form, and a transformation, and "X", the roman numeral for 10, and referring to his mysteriousness.


  • Before Alien X appeared, the opening of Ben 10: Alien Force showed only a silhouette of him, after he appeared, it showed his full picture.
  • Alien X is a Nano and a former NPC in the game FusionFall.
  • In Project Exonaut, Alien X is a level 10 suit.
  • In Andreas' Fault, a fan of Ben refers to the Alien X smoothie as a disappointment as well as saying it tastes like "filler." This is a reference to Alien X's constant standing in the series.
  • Ironically, in many promotional images of him, Alien X is posing dramatically (like in the openings to Alien Force and Ultimate Alien), while in the actual series, most of the time, he is frozen in a standing-up position.
  • In A Jolt from the Past, Rook speaks of Alien X, but believes he is just a rumor. Ben tries to convince him that Alien X is real, but Rook doesn't believe him and asks Ben to transform and show him, which Ben refused.
  • Alien X was the first alien in Alien Force to not be voiced by Dee Bradley Baker. The second was Rath, who is voiced by John DiMaggio.
  • In Alien Force, Ben served as the tie breaker for Alien X; if two of the personalities agreed on something, the motion was carried. In Omniverse, all three personalities must agree.


See Also

Ben 10 Aliens
Introduced in Ben 10
ArctiguanaBlitzwolferBuzzshockCannonboltDiamondheadDittoEye GuyFour ArmsFrankenstrikeGhostfreakGrey MatterHeatblastRipjawsSnare-ohStinkflyUpchuckUpgradeWay BigWildmuttWildvineXLR8
Introduced in Ben 10: Alien Force Introduced in Ben 10: Alien Swarm
Alien XBig ChillBrainstormChromastoneEcho EchoGoopHumungousaurJetrayLodestarRathSpidermonkeySwampfire Nanomech
Introduced in Ben 10: Ultimate Alien Introduced in Heroes United
AmpFibianArmodrilloChamAlienClockworkEatleFasttrackJury RiggNRGTerraspinWater Hazard Shocksquatch
Introduced in Ben 10: Omniverse
AstrodactylAtomixBall WeevilBloxxBullfragCrashhopperFeedbackGravattackGutrotKickin HawkMole-StachePesky DustThe WorstToepickWalkatroutWhampire
Ultimate Forms
Big ChillCannonboltEcho EchoHumungousaurSpidermonkeySwampfireWay BigWildmutt
Future Aliens Fusion Aliens See Also
SandboxShellheadSnakepitSpitter Diamond MatterHeat JawsStink Arms Decagon VreedlePortalerRocksSquidstrictorVentrilosquid
Albedo's Aliens
Regular Aliens
Alien XArmodrilloArctiguanaBig ChillBrainstormChamAlienDiamondheadEcho EchoFasttrackGoopGravattackHumungousaurJetrayLodestarNRGRathSpidermonkeySwampfireWildvine
Ultimate Forms
AlbedoArctiguanaEcho EchoGravattackHumungousaurRathSpidermonkey

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