|Benjamin Kirby Tennyson|
Protector of Earth
|Abilities|| Enhanced memory|
Wielder of the prototype Omnitrix/Ultimatrix/Omnitrix/Omnitrix MK10 (Formerly)/Ultimatrix MK10
Enhanced fighting skills
|Equipment|| Omnitrix MK10 (formerly)|
Ultimatrix MK10 (currently)
|Relatives|| Sandra Tennyson (Mother)|
Carl Tennyson (Father)
|Alternate Counterparts||Ben Tennyson (Dimension 23)|
|First Appearance||Road Trip|
|Voice Actor||Yuri Lowthernal|
Benjamin "Ben" Kirby 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, he 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 obtained an honorary college degree from Friedkin University.
Ben's physical appearance has changed throughout the series from a ten-year-old to a sixteen-year-old. However, he retains some recurring characteristics. He has shaggy brown hair, green eyes, pale skin, and he's quite skinny for his age, though he shows a lot of muscle definition due to being athletic, he wears brown pants. He also has the same hair style. He has the same shirt as his future OV counterpart. He wears the Ultimatrix MK10 on his left wrist.
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. He's kind-hearted, willing to sacrifice even his own life for others. His idealistic views and unwillingness to compromise his values - aspects condemned by Azmuth, yet commended by others - sometimes drive him to act against reason, such as helping his enemies if they need it (most remarkably Vilgax). 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.
However, when Ben fails to save someone, or if someone gets hurt because of his failures, he becomes angry and much more violent. Perhaps the most notable of these instances is when Kevin willingly mutated himself to succeed where Ben had failed and stop Aggregor, Ben was set on killing Kevin, even fighting Gwen when she refused to help him. He also threatened to hunt down destroy the Forever Knights once making Driscoll promise to cease the hunting of aliens.
Though often stated to be silly or unintelligent because of his immaturity, Ben is actually shown to be cunning and resourceful when needed, quickly adapting when the Omnitrix doesn't provide him with the alien he wanted.
Later on, Ben starts thinking of himself as more of a superhero than a Plumber, often remarking that he's not a cop, but a superhero. Although he once again became cocky, he retained his selfless and heroic nature.
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 Armstrong'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 shown to be a crafty fighter and actually uses freestyle fighting.
It's evident that Ben is smart in some respects, possessing an above average intelligence. It was even stated by Gwen 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.
He also posses the Ultimatrix MK10, having the ability to turn into various aliens.
Whenever the Ultimatrix MK10 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, 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 be 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.
Despite his experience in using the Omnitrixes and Ultimatrix, Ben still does not know every function of them. Due to his inquisitive nature and impatience, he has accidentally unlocked new functions such as the Master Control and the randomizer, which can at times do more harm than good.
Though the current Ultimatrix MK10 is designed to work only for him, Ben still has not mastered it. According to Azmuth, Ben may get the Master Control on his 18th birthday.
Ben has an allergy to peanuts and has a fear of peacocks. He also has coulrophobia, the fear of clowns.
Ben's left eye twitches whenever he tells a lie, but only Kevin appears to notice this.
Ben appears to have a short attention span at times, and more often than not it can get him into trouble.
Though he has matured substantially since receiving the original Omnitrix, he is still a teenager with much to learn and is prone to irrational impulses and recklessness.