Gwen Tennyson is Ben's cousin and Max's granddaughter in the Ben 10 franchise.
- Gwen Tennyson will meet Ryan in
- She is voiced by Ashley Johnson.
Gwen Tennyson [young] from the original series.
Young Gwen from the Ben 10 2016 reboot.
Teen Gwen from Ben 10 Alien Force [Seasons 1 & 2]
Gwen from Ben 10: Alien Force [Season 3]
Gwen in Ben 10: Ultimate Alien.