We need to now our responsiblities Devlin. We didn't choose this life, but which kid did?

–Ken to a Mutated Devlin

Ken "Kenny" Tennyson is the son of Ben Tennyson and Kai Green from the Prime Timeline.


Kenny bears a striking resemblance to his father when he was his age. His clothes are modeled after his father's. These include a black T-shirt with white accents and borders at the sleeves, and his trademark baggy green cargo pants. Kenny's eye color is even the same as Ben's. His skin tone is slightly tanned, a trait which he inherited from Kai.

As Spanner, he wears a white armored jumpsuit, along with a green scarf and a white helmet. He appears to have some sort of equipment on his wrists.


Kenny is very much like his father was when he was 10 years old. One example of this was his friendship with fellow troublemaker Devlin Levin who turned good.

Ken was also shown to be slightly more intelligent and resourceful than his father was at the same age, as he used Grey Matter to hack his Omnitrix and unlock the Master Control, something that his father's Galvan form couldn't do or even think of.



Powers And Abilities


Ken wears an Omnitrix made by his father on his left wrist. His list of aliens are:

Like Ben, Ken had access to only 10 alien forms in the beginning with his Omnitrix.


Whenever the Omnitrix times out, Ken 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.

The Omnitrix does actually mistransform sometimes but for giving Ken right alien for situation.


  • All Episodes



Gwendolyn Tennyson

Gwendolyn is Ken's sister and basicly a little smarter. Basicly this two sometimes fight with each other like Ben and Gwen in OS. But they help each other when comes to battles and know their responsibilities to save people.

Devlin Levin

Devlin is Ken's cousin. They don't seem to fight oftenly and they are best friends but when Devlin loses control, Ken is the first he always tries to kill. That reason Devlin don't hangout with Gwendolyn and Ken if he gets suspicious that he'll lose control.

Big Chill's Offsprings



  • Ken's favorite food is pasta with cheese sauce chili fries alongside chocolate smoothie.
  • Ken stopped using Spanner suit because it was stolen.
    • The story kinda resembles Robin and his Red X suit from Teen Titans where the suit was stolen and used for evil.
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