Benjamin Kirby Tennyson is a typical ten-year-old boy — he plays video games (his particular favorite is a franchise called "Sumo Slammers"), rides his bike, and often gets into mischief.

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Official Biography

Ben is your typical 10-year-old boy-he plays video games, rides his bike, and sometimes gets into trouble. When he gains that ability to turn into 10 different aliens, he finds that being a superhero is trickier than he ever imagined. But no matter what bizzare form Ben takes, he's still the good-hearted yet mischevous 10-year-old inside. Ben Tennyson As A 10 Year Old Boy appears in every Ben 10 episode except Ken 10.

Personality

No matter what bizarre form Ben takes, inside he is still the same mischievous 10-year-old boy. He is something of a glory hog, sometimes taking credit that he does not deserve. He also tends to be a sore loser, especially when it is Gwen who outdoes him. Ben is not above using the Omnitrix to pull pranks, even during urgent situations. In spite of all this, Ben is good-hearted and will stop at nothing to protect his family or anyone in danger. Even when not in alien form, Ben's resourcefulness has saved himself and others from many a dire situation, especially when the Omnitrix cannot activate.

Alternate Bens

Alien Force Ben 10

Five years after the original series Ben returns to the hero business as a teenager, joined once more by Gwen and with the addition of his former rival Kevin to the team.

Young Ben

Young Ben was seen in a flashback in Ben 10 Returns Part 2.

Four Year Old Ben

In the episode "Don't Drink The Water", because of the mystic properties of the Fountain of Youth, he was changed into his four year old body. His aliens were also transformed as well.

Ben 10,000 (future Ben)

Twenty years into a possible future, Ben has become a full-time superhero. He no longer bothers to conceal his identity, either, as he is recognized everywhere as Ben 10,000. He also has 10,000 alien forms, hence the name, and since has once again unlocked the Omnitrix function that allowing him to switch forms at will. Having been fighting crime for such a long time, Ben 10,000 has grown into a more strict and serious character, though his interaction with his past self in the episode "Ben 10,000" seem to have changed this. Ben's alien forms have aged with him, which is evident in their appearances and abilities. For example, Ben 10,000's XLR8 is noticeably taller with grey outlines in place of the ordinary blue and is also considerably faster,his Fourarms is wearing a sleeveless shirt and his Omnitrix Symbol is on his chest, while normal Ben's Fourarms wears a short sleeve shirt, with the Omnitrix Symbol being on his right arm. In the episode "Ben 10,000" future Ben shirt is black and grey instead of black and white. The white part of ten year old Ben's shirt is replaced by black while the black part is replaced with grey. In the episode "Ken 10" future Ben's shirt is black and white like the normal Ben's. Future Ben is mentioned by Paradox in Ben 10 episode Paradox.

see also: Ken Tennyson and Devlin

Ultra Ben

Ben also has his own superhero alter ego, called Ultra Ben It doesn't appear in any real world situations, but in "Perfect Day" and "The Galactic Enforcers" it is seen.

Elf Ben

Ben Tennyson is turned into an elf in Ben 10 episode Merry Christmas.

Powers and Abilities

During a camping trip with his grandfather Max and his cousin Gwen, he found the Omnitrix an alien device that gives him the ability to turn into various aliens. Unable to remove it, he uses its powers to become a superhero. He finds the job trickier than he imagined, especially with the evil alien warlord Vilgax pursuing him relentlessly to retrieve the Omnitrix. Ben currently has access to 20 Omnitrix alien forms as of Race Against Time (however it is not canon). And in the future it is revealed the he gains 10,000 alien forms. Ben Tennyson is 3/4 Anodite and 1/4 Human.

Ben Tennyson's First Appearance (10 Year Old Boy)
And Then There Were 10

Ben Tennyson's Last Appearance (10 Year Old Boy)
Goodbye And Good Riddance

Primary Relatives

• Gwen Tennyson: Cousin
• Max Tennyson: Grandfather
• Verdona Tennyson (Anodite) : Grandmother
• Carl Tennyson: Father
• Sandra Tennyson: Mother
• Frank and Lily Tennyson: Uncle and Aunt
• Ken Tennyson: Future Son
• Devlin Levin: Future Adopted Son

see also: Tennyson Family