Kenneth "Ken" Tennyson (also known as "Kenny") is Ben's and Kai's son in the future. Kenny has a sister named Gwen, after Ben's cousin, but his sister hasn't made an appearance as of yet. He made his first appearance as seen in the episode, "Ken 10" Ken looks very similar compared to Ben when he was ten. Ken is different from Ben because of his maroon colored hair with a darker skin. He is voiced by Tara Strong who coincidently also voices ten year old Ben too. Ken Tennyson has an adopted brother named Devlin Levin. He was named after his Uncle Ken. He is Ken Tennyson Jr while his uncle is Ken Tennyson Sr.
Ken Tennyson has made one appearance in the Ben 10 Series.

Also See: Ken's Omnitrix

Personality

Kenny's traits are very alike compared to ten year old Ben's behavior. Only to be a little bit different because of his father's legacy. One example was when he felt let down when he was first being told to only have 10 alien forms like ten year old Ben.

Friends

Kenny's friends include the
Billy Alien
One Eyed Alien Kid
Girl From Ken 10
His Adopted Brother Devlin Levin.
His Pet Stone Puppy

Powers and Abilities

Because he was given an Omnitrix by his father Ken has access to ten alien modes, seven he either whom have appeared before are Buzzshock, Ditto, Grey Matter, Spitter, Stinkfly, Wildvine, and XLR8. The three other alien forms are named Sandbox, Snakepit, and Shellhead. Shellhead was only described by Ken to be like a giant turtle, both in Shellhead's appearance and their ability. Ben previously contained another unseen alien called Toepick. Ken then complained about Toepick's grossness and was able to presuade his father eventually switching it in exchange for Grey Matter.