Ben 10 Codexery

Ben Tennyson

A boy who uses the Omnitrix to turn into alien species and protect others.

Benjamin Kirby “Ben” Tennyson, commonly known as Ben 10, is a superhero and the titular protagonist of the Ben 10 franchise. Created by Man of Action and produced by Cartoon Network Studios, he first appeared in the animated series Ben 10 (2005–2008), following his journey through Ben 10: Alien Force (2008–2010), Ben 10: Ultimate Alien (2010–2012), and Ben 10: Omniverse (2012–2014). There have been two reboots, the animated series Ben 10 (2016–2021) and the Dynamite Comics series Ben 10 (2026); both return the character to the age of ten. Across these iterations, he matures from a reckless and adventurous child into a capable and responsible hero once he obtains the Omnitrix, a watch-like device which allows him to turn into various alien species. The Ben of the first four series is called Ben Prime, and his Prime Timeline is treated as the origin point of the whole multiverse.

Quick Facts

Franchise
Ben 10
First
"And Then There Were 10" (December 27, 2005)
Last
"A New Dawn" (November 14, 2014)
Creator
  • Joe Kelly
  • Joe Casey
  • Duncan Rouleau
  • Steven T. Seagle
Voice
Tara Strong (child) (2005–2008; 2012–2014); Yuri Lowenthal (teenager) (2008–2014)
Full name
Benjamin Kirby Tennyson
Species
Human
Weapon
  • prototype Omnitrix (formerly)
  • Ultimatrix (formerly)
  • Completed Omnitrix

Lore & Background

The story begins when ten-year-old Ben finds the Omnitrix in a crashed pod in the woods during a summer vacation. Initially cocky, childish, and selfish, Ben's immaturity and attention-seeking behavior often led him to joke around, regardless of the situation, which landed him in trouble with adults. He often used the Omnitrix improperly to benefit himself instead of actually helping others, and it was implied that, on some level, he helped people for rewards and the thrill of being a hero, rather than because it was the right thing to do.

Despite this, Ben was heroic, caring, and generally good-natured, always willing to save others at any time even at the risk of himself. Over the years, Ben has displayed good leadership skills, as well as the ability to adapt his attitude to a situation, becoming serious when it's called for. He became more mature, responsible, and sensible, continuing to be kind-hearted and willing to lay down his own life for others. Professor Paradox has praised Ben's good nature, going so far as to say he had the gift to make the right choices at the right moments, and even Azmuth states that Ben ultimately always does the right thing.

However, even as a teen, Ben still displays some of his negative childish traits at times, which usually comes to light when Ben gets too caught up with fame much to the annoyance of Gwen and Kevin. Ben also has a violent, aggressive side: when Ben fails to save someone, is worried about the well-being of his loved ones, or if people get hurt because of his failure, he becomes angry and lashes out, even at people he cares about. Ben confessed to Max that he felt guilty for letting fame get into his head and claimed that he was trying to act more mature for once.

Reader's Guide

Ben Tennyson serves as the moral compass and primary defender across multiple timelines and iterations of his life. His journey spans from childhood recklessness to mature leadership, often balancing personal desires with cosmic responsibilities. He possesses no innate superpowers but relies entirely on the Omnitrix device to access alien DNA samples for combat and utility. His character arc emphasizes growth through failure, learning that power is a burden he must carry responsibly.

Throughout his adventures, he faces recurring villains who challenge his resolve, forcing him to evolve both physically and emotionally. His skills extend beyond transformation; he is a skilled tactician in combat situations and often inspires others to fight for justice. Whether fighting alongside the Plumbers or operating independently, Ben remains defined by his courage and willingness to put himself at risk for strangers.

Did You Know?

Frequently Asked Questions

Who is Ben Tennyson?

Ben Tennyson is the primary protagonist of the animated series franchise who accidentally gains the Omnitrix during a childhood road trip. This device allows him to shapeshift into various alien species to combat threats across the universe.

What are Ben Tennyson's powers?

His abilities come from the Omnitrix, a watch-like device that lets him turn into various alien species. While human himself possesses no innate superpowers, he relies on his tactical skills and these transformations to fight villains.

Is Ben Tennyson still active?

Yes, Ben remains an active hero across various media continuities, ranging from his teenage years to adulthood in later series. His status as the Omnitrix holder keeps him central to ongoing conflicts within the franchise's universe.

More in Characters & Aliens

Elsewhere in Ben 10

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