Well if you mean Ben10, Ben10 alien force ect. Then yes it's considered anime.
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.
in a cartoon
No.
In ben 10 which day in december that's gwen tennyson's birthday
Ben's cousin
Ben Tennyson
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