Benjamin Kirby Tennyson is an 11 1/2 year-old Human/Anodite hybrid from Earth. He is also the wielder of the Omnitrix.

Pre Ben 10. Bio (Canon)

See Ben Tennyson for more info.

Ben 10.5 Bio

After defeating Malware, Ben thought that his days of being a hero were over, and actually thought of removing the Omnitrix, until one day, the Omnitrix encountered what he had thought to be an error, and changed its appearance, becoming less bulky. Little did Ben know that the recalibration process was activated, and that because of this, the Omnitrix's alien database was somehow expanded, allowing him access to more alien transformations.


At the start of the series, Ben's appearance was identical to how he looked in the flashbacks of Omniverse. Then, the Omnitrix recalibrated, becoming less bulky, and appearing to look more like a wristwatch. Besides that, his appearance remained generally the same. However, in Season 2, starting with Happy Days, Ben's attire was updated, and he now wears a black t-shirt with a green stripe on it, much like the one 16 year-old Ben wears, as well as bluejeans, along with the same shoes as he wore before.


Ben 10.5

Season One

  • All episodes

Season Two

  • All episodes
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