Benjamin Kirby "Ben" Tennyson was a normal ten-year-old kid until he found the Omnitrix, a powerful watch-like device that allowed him to turn into ten different aliens. Though initially immature and clumsy, Ben grew to be a true hero. By the time he was sixteen, he had become famous in not only his hometown of Bellwood but on Earth and beyond. Ben has also been deputized by the Plumbers and gained more aliens as time progressed.
Ben has shaggy brown hair, green eyes, pale skin, and he's very muscular for his age. Ben usually wears a variety of clothes, but most commonly a black and green striped coat with his original shirt below it, brown pants or his Omniverse jacket. He wears The Omnitrix on his left wrist.
Powers and Abilities
Ben has been trained in hand-to-hand combat by black belt Gwen, Max, as well as various years fighting aliens, and received a basic Plumber training. He proved to be quite skilled in basic hand-to-hand combat as well armed and unarmed combat, being able to easily dodge shots from Manny's blasters and proceed to disarm him while in human form. Ben was able to hold his own against Pierce, and Max hinted that Ben was a highly skilled fighter, even as a human. Another hint of his exceptional hand-to-hand skill is when he succeeded in the Plumbers' Academy with a 95 out of a 100. He is also a crafty fighter and actually uses freestyle fighting.
It's evident that Ben is smart in some respects, possessing an above average intelligence. Gwen even stated that he really isn't working up to his potential at school. He also has fairly moderate grades. Physics and Chemistry are his toughest subjects, yet he still maintains a B+ average.
Ben has an extraordinarily sharp memory, as he was perfectly capable of remembering and writing down the mystic rune-like symbols for entering the inter-dimensional realm of Ledgerdomain with just one glance from a distance. This is even more true for things that interest him.
Ben is also a cross dominant, skillfully wielding tools and weapons in either hand, in human or alien form.
Ben is the wielder of the Omnitrix (formerly the Ultimatrix and first Omnitrix), which gave him the power to modify his own genetic code in order to turn into various alien creatures. Due to the new recalibration of the Omnitrix, Ben can only access 10 new aliens.When transforming into an alien, Ben gets all the creature's features, including its appearance, voice, all of its unique and special abilities and powers, strengths and weaknesses. Though he mostly retains his personality, there are some cases where the transformation causes a change in it.
Whenever the Omnitrix times out, Ben is left powerless until he either dodges or switches to a new alien form. In addition to gaining the selected alien's powers and strengths, he gains its weaknesses. Additionally, at times the natural biological behavior of certain aliens can override Ben's behavior, such as Big Chill's reproductive phase or Swampfire's blossoming process. Furthermore, any illness Ben is experiencing in his human form will also affect his alien forms. Whenever Ben unlocks a new alien form, he is at a disadvantage of not knowing its abilities and weaknesses until he gains experience with using the new alien.
Ben has an allergy to peanuts and has a fear of peacocks. He also has coulrophobia, the fear of clowns, his left eye twitches whenever he tells a lie, but only Kevin appears to notice this, and he also appears to have a short attention span at times, and more often than not it can get him into trouble.