Kai Green is Bens wife, the mother of Ken and Gwendolyn Tennyson, and one of Kais possible futures from an alternate timeline.

Who is Bens 10 girlfriend?

Ben TennysonBenjamin TennysonSignificant otherKai Green (girlfriend; wife in the future) Julie Yamamoto (ex-girlfriend) Elena Validus (friend/crush, later enemy) Ester (ex-girlfriend)15 more rows

Did Ben 10 have a daughter?

Gwendolyn Tennyson is Ben Tennyson and Kai Greens daughter [note 1] [merchandise 1] and Kens sister from an alternate timeline.

Why did Julie break up with Ben?

The out-of-universe reason for Ben and Julie breaking up was that the crew wanted to do something different, and some of the producers didnt care for their relationship in Alien Force and Ultimate Alien.