Ultimate Ben 10
DoB10 Ultimate ben 10
General Information
Species Human
Age 17
Home World Earth
Residence Bellwood
Dimension Dimension 10
Timeline Ultimate Ben Timeline
Affiliations Plumbers
Occupations Plumber


Abilities and Equipment
Abilities DNA Alteration

DNA Evolution
DNA Reparation
Universal Translation

Equipment Ultimatrix

Prototype Omnitrix (formerly)

Alias Ben 10 (Hero Name)
Relatives Carl Tennyson (father)
Sandra Tennyson (mother)
Max Tennyson (grandfather)
Gwen Tennyson (cousin)
Alternate Counterparts Ben 10 (Main Timeline)
Ultimate Ben 10'000 (Future Self)

Mad Ben
Ben 23

First Appearance Death of Ben 10
Last Appearance Death of Ben 10
Ben Tennyson is a parallel version of Ben Prime from a timeline where he keeps the Ultimatrix. He is a human from the planet Earth. He first appears in the Death of Ben 10 Prologue. He exists in Earth-1010/Dimension 10/Timeline 3, more commonly known as the Ultimate Ben timeline.


Ultimate Ben 10 looks identical to a 15/16 year old Ben Prime. He wears the same green jacket, with black shirt, as he does in Alien Force and Ultimate Alien. He wields the Ultimatrix on his left wrist.


Ultimate Ben 10 acts similarly to Ben Prime, except more confident. Ultimate Ben 10 rarely panics when he is losing, knowing that he could always ultimize his aliens.

This Ben habitually name-calls his aliens when he is using them, even more so than his counterparts.

Powers and Abilities

Ultimate Ben 10 wields the Ultimatrix with great skill, only occasionally using the ultimizing function. He possesses all of the same aliens as Ben Prime, except he does not have the problem of the Ultimatrix giving him the wrong aliens because he has learnt how to properly use it. Paradox predicts that he will unlock the master control within the next few months, even if he will eventually cease to use it.

He shares the same skills and abilities as his main universe counterpart.


His confidence in his own abilities means that if he is facing someone stronger than any of his ultimate aliens he will begin to panic HARD.

Unlike Ben Prime, Ultimate Ben 10's Alien X is still locked by two keys inside the Ultimatrix. The keys are possessed by Gwen and Kevin. This means that Ben could never use Alien X to fight the Galactic Gladiator in Universe vs. Tennyson, and therefore never learnt how to properly use Alien X.


Up until the canon ending of Ben 10: Ultimate Alien, Ultimate Ben 10's timeline is the same as Ben Prime's. After defeating Vilgax in The Ultimate Enemy, this Ben does not give his Ultimatrix to Azmuth in exchange for the new Omnitrix.

He, at some point, confronted and defeated his version of Apollo.

Death of Ben 10

His first important appearance in the series was in Chapter 11, where he showed up alongside other alternate Omnitrix wielders to help save Ben Prime from Apollo. He helped the group infiltrate the San Diego Ironworks in Chapter 14, and confronted Apollo directly in Chapter 15.


Death of Ben 10


  • This Ben's timeline began to diverge from the main continuity in the episode X = Ben + 2.
  • All of this Ben's aliens resemble their Ultimate Alien appearances.
    • Any Ultimates we only see used by Albedo in Omniverse appear far more refined and natural when this Ben uses them. This is because of the difference between Ben's Ultimatrix and Albedo's Recreated Ultimatrix.
Death of Ben 10
Aaronbill3 Ben 10: Reboot Revolution
Act 1

Prologue - Chapter 2 - Chapter 3 - Chapter 4 - Chapter 5 - Chapter 6

Act 2

Chapter 7 - Chapter 8 - Chapter 9 - Chapter 10

Act 3

Chapter 11 - Chapter 12 - Chapter 13 - Chapter 14 - Chapter 15
Chapter 16: Part 1 - Chapter 16: Part 2 - Chapter 17 - Epilogue

Introduced in Act 1

Alien X - Buzzshock - ChamAlien - Chromastone - Clockwork - Diamondhead - Way Big - XLR8

Introduced in Act 2

Atomix - Armodrillo - Big Chill - Fasttrack - Goop - Gravattack - Lodestar - NRG - Snare-oh - Swampfire

Introduced in Act 3

AmpFibian - Arctiguana - Barrier Reef - Bloxx - Brainstorm - Cannonbolt - Ditto - Echo Echo - Eye Guy - Feedback
Geothermite - Ghostfreak - Gutrot - Heatblast - Hightide - Humungousaur - Jetray - Kickin Hawk - MindMatter - Sandbox
Spidermonkey - Stinkfly - Rath - Upchuck - Upgrade - Water Hazard - Wildvine

Ultimate Aliens

Ultimate Ben - Ultimate Big Chill - Ultimate Clockwork - Ultimate Echo Echo - Ultimate Fasttrack - Ultimate Gravattack
Ultimate Humungousaur - Ultimate Spidermonkey - Ultimate Upgrade

Fusion Aliens

Arctomix - Atomisaur - Big X - Camomech - Charmedge - Diamondactyl - Ectograde - Feedback Attack - Gecko Gecko
Gravattomix - Jawful - Snare-Chill - Tickin' Clock - XLRay - XLRtrack

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