General Information


Home Planet:


Other Info
Crimes: Stealing Life Energy
Assaulting a Plumber
Goal: Having Unlimited Power
Dating Gwen Tennyson
Abilities: Absorbing Life Energy
Blinding Glow
Stealing Powers
1st appearance: Ben 10: Invasion of the Omnitrix
Arch-enemy: Ben Tennyson
Gwen Tennyson (neutral)
Henchmen/Leader: Unknown

Darkstar is a main villain in the first and second seasons of Ben 10: Alien Universe, and a minor villain in the sequel series Back in Action: Alien Universe.


In Ben 10: Alien Universe, Darkstar looks very similar to his appearance in Ben 10: Alien Force, minus the cape and eye holes in his helmet. When he appeared in Ben 10: Invasion of the Omnitrix, he appeared yellow because this was a copy of himself inserted in the Omnitrix to steal DNA. He fleed at the site of XLR8 for unknown reasons. When he appears again in Darkstar Falling, the four DNA samples he had stolen (Humongousaur, Brainstorm, Alien X, Chromastone), were restored to the Omnitrix, and he was defeated by Cannonbolt.

In Back in Action: Alien Universe, he will look more like the Ultimate Alien Eon, with a visor on his helmet. He still lacks his cape, nonetheless, but is now taller and more muscular.


Darkstar, following the events of his appearances in Alien Force, seeks Ben's alien powers so that he may be stronger. After losing the ability to simply suck the life energy from girls at his school, as well as his looks, Ben and Gwen's powers are his only true source of unlimited power.

He has a crush on Gwen, but doesn't see Cooper or Kevin as threats to his goal of dating her.

Powers and Abilities

In Threat or Menace, Darkstar was shown to have gained the ability to conjure portals from absorbing the abilities of a member of Streak's species in the Null Void. Nonetheless, this ability was taken by Obsorber in The Alternative.

Ben 10: Alien Universe

  • In Ben 10: Invasion of the Omnitrix, Darkstar stole four alien forms from the Omnitrix by using an exploit he figured out from previous fights with Ben that involved entering the Hidden Universe. He fleed after seeing XLR8, but was shown to have killed Sentient Brainstorm (while stealing Brainstorm, Humungousaur, Alien X, and Chromastone).
  • In Darkstar Falling, Darkstar returned to Ben in an attempt to steal more forms (and ergo, more power). An angered Ben used Cannonbolt, Echo Echo, and Lodestar to finally defeat Darkstar. He was defeated by Ben, losing his stolen power (and restoring Sentient Brainstorm to the Hidden Universe).

Back in Action: Alien Universe

  • In Limited, Darkstar was blowing up cars in Downtown Bellwood to lure Ben so he could steal more alien powers. His efforts were unsuccessful, so he was defeated and sent to the Null Void by Streak.
  • In Threat or Menace, he exited the Null Void to fight Ben using his new portal-conjuring abilities. He was returned to the Null Void after a battle with Upchuck and Streak.
  • In The Alternative, he was seen stealing bags of money and jewelry from a Bellwood jewelry store.


​Ben 10: Alien Universe

Back in Action: Alien Universe


  • In the first two of his Back in Action: Alien Universe appearances, he was defeated by Streak. In his third appearance, Streak had been locked out from use in the Omnitrix. In his fourth appearance, he had already been defeated. In his fifth appearance, he attempted to fire at Ben, but Brawnoceros sent the blast right back at him. 
Back in Action: Alien Universe --COLOR (TCF)
Episode Guide
Season 1
Infernosphere - Limited - Magikfest - No Strings Attached - The Sea's the Limit - Hit and Miss - Dial Z for Zombified - Ten Plus Twenty - Happily Never Happened - Missing Link - New Girl - Revelation - Man in the Stone Mirror - Threat or Menace - The Alternative - Why Am I Here? - Love Stuck - Ultimate Solution - Overcoming Adversaries - Ledger Recon - Welcome to Chronospect - Prelude of the Unleashed - Ben 10: Alien Universe Unleashed
Season 2
Meet the Replacements - Hooking Up With the K's - The Armaggedroid - Fate of the Helpers - Madame Regle - Leaked - Shades of Dawn - Foreverlasting
Canon Aliens
Original Series
Heatblast - Wildmutt - Diamondhead - XLR8 - Four Arms - Stinkfly - Ghostfreak - Ripjaws - Upgrade - Grey Matter - Cannonbolt - Wildvine - Benwolf - Benmummy - Benvicktor - Way Big - Upchuck - Eye Guy - Ditto - Buzzshock - Spitter - Articguana
Alien Force
Swampfire - Echo Echo - Humungousaur - Jetray - Big Chill - Chromastone - Brainstorm - Spidermonkey - Goop - Alien X - Rath - Lodestar
Ultimate Alien
Water Hazard - Terraspin - NRG - Forge (Armodrillo) - AmpFibian - Clockwork - Fasttrack - Jury Rigg - ChamAlien - Eatle - Shocksquatch
Omniverse (regrettably)
Feedback - Bloxx - Gravattack - Crashhopper - Ball Weevil - Walkatrout - Pesky Dust - Molestache - The Worst - Kickin Hawk - Toepick - Astrodactyl - Bullfrag - Radius - Gutrot - Whampire
Ultimate Forms
Swampfire - Spidermonkey - Big Chill - Humungousaur - Cannonbolt - Echo Echo - Wildmutt - Way Big - Grey Matter - Articguana - Gravattack - Jetray - Benmummy - Upchuck
Unique Aliens
Season 1 Additionals
Obsorber - Nigester - Plastikitee - Anos - Streak - Bugbite - Muckslide - Autosassin - Boomchomp - Abstallion
Season 2 Originals
Alkamine - Brawnoceros - Combustiball - Cardstruct - Dreadsense - Frisbit - Plasmodic - Seismix - Wavelength
Season 2 Additionals
Atomhammer - Hindsight - Starhavoc
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