|Relations||Gwen Tennyson (sister)|
|Base of Operations||The Awesome Mobile|
|Group Affiliation(s)||Tennyson Family|
|Species||3/4 Human, 1/4 Anodite|
|Gallery | Quotes | Appearances | Merchandise|
In "Max Out", he is captured by the DNAliens and mutated into one of their own through an alien parasite, known as Xenocytes. Enslaved to the alien's will, Ken captures Grandpa Max and later fights Ben Tennyson, Gwen Tennyson, and Kevin Levin. Gwen restrains him while Ben uses the Omnitrix to repair the damage caused by the parasite, separating it from Ken. Ken then assists in destroying the parasite eggs being shipped from The Hatchery.
- He is admired by Ben and Gwen.