Benjamin Kirby Tennyson
Ben Tennyson in Heroes United.


3/4 Human, 1/4 Anodite (original)
3/4 Human,1/4 Pyronite and 1/4 Ectonurite (Alternate)


Enhanced memory
wielder of the Omnitrix/Ultimatrix
Enhanced fighting skills


Sandra Tennyson (Mother)
Carl Tennyson (Father)
Gwen Tennyson (Cousin)
Max Tennyson (Grandfather)
Verdona Tennyson (Grandmother)
Frank Tennyson (Uncle)
Ned Tennyson (Brother)


10 (Original Series/Ned10)
15 (Alien Force/Ned10:Alien Patrol)
16 (Ultimate Alien/Will 10/ Ned10:Ultimate Adventures)
19 (Will 10 X)
30 (Ben 10,000)
36 (Ben 10,000 Returns)
42 (Ken 10)


Benjy (Kevin 11,000)
Ben 10
The Great Ben 10
Wielder of the Omnitrix

Benjamin Kirby "Ben" Tennyson is the main character in the Ben 10, Ben 10: Alien Force, and Ben 10: Ultimate Alien. He finds the Omnitrix and then, throughout the series, learns to use the powerful alien device, including the responsibility of wielding it, to become a true hero of the entiere galaxy. He is a Human from Earth.


Ben Tennyson has brown hair and green eyes (in Alien Force his eyes appear to be of a darker green). In the original series, he wears a black and white t-shirt and green pants. In Alien Force, he wears a black t-shirt with a green jacket over it and a pair of jeans. His jacket in Alien Force has the number 10 on it.

Original SeriesEdit

Ben was originally a typical ten year old boy, who grew up in Bellwood, and he was unpopular and bullied in his school.

However, his live changed the day he went in summer vacation with his grandfather Max and his cousin Gwen. A short time after they left Bellwood, Ben went on a walk and witnessed the crash of a strange capsule from space. This capsule happened to contain the Omnitrix, a powerful watch-like device, who fixed itself on Ben's wrist.

At first scared, Ben soon discovered that using the Omnitrix, he was now able to transform in ten super-powered alien creatures. Unable to remove it, he eventually learned to used it (though with relative problems) in order to become a super-hero. Though he occasionally arrest ordinary criminals, he was quickly led to also fight super-villains, starting with Dr. Animo, Kevin 11, and ultimately Vilgax, a vicious alien warlord who wanted to get the Omnitrix for himself.