ten
Ben's cousin is Gwen Tennyson and Ben's Grandpa is Max Tennyson.
Ryan kelly plays ben tennyson
Gwen Tennyson
Ben Tennyson's voice actor is Yuri Lowenthal in Ben 10: Alien Force.
No.
in a cartoon
In ben 10 which day in december that's gwen tennyson's birthday
Ben Tennyson
Ben's cousin
Ben 10 Alien Force is a cartoon on Cartoon Network. His name is Benjamin Kirby Tennyson and the character is voiced by Yuri Lowenthal.
Gwen Tennyson, like her cousin Ben, is a human/Anodite hybrid.
Tara Strong