Benjamin 'Ben' Tennyson is a Terran from the planet Terra in Ben 10: Alien Planet.
In Alien Planet, Ben 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 also has a white hooded jacket with green stripes on both arms.
Ben is initially a cocky, arrogant and immature who tends to make jokes, even when fighting enemies. He's also reckless and charges into things head first without even taking a second thought.
Powers and Abilities
Ben is able to absorb powers and abilities of aliens and then to manifest traits of these aliens without changing his form. Usually, the Biomatrix limits these powers to about 10 minutes or so .
There is a green tatoo like pattern on the back of Ben's neck that allows him to change different settings in the Unitrix since it has no voice command.
Ben has an allergy to peanuts and has a fear of peacocks, but also has a fear of clowns. Ben's left eye twitches whenever he tells a lie, but not many people seem to notice. Lastly, Ben seems to be reckless and arrogant which leads to him getting himself into difficult situations.