This is for the page about Ben 10,000's daughter. If you were looking for Ben Tennyson's cousin, go here.

Gwendolyn Tennyson
Jen tensyonNB
General Information
Species Human/Anodite
Home Planet Earth
Residence Bellwood
Age 13
Powers and Abilities
Abilities Magic
Mana Manipulation
Hand-to-Hand Combat Skills
Enhanced Intelligence
Relatives Ben Tennyson (Father)
First Appearance TBA

Gwendolyn Tennyson is Ben 10,000 and Kai Green's daughter and Ken's sister. She is half Human and half Anodite.


Gwendolyn Tennyson is a normal 13 year old girl, a little short for her age though. She has green eyes and her brown hair goes down over her right eye. She wears a black sweatshirt with green collars and a green 10. She wears a skirt with the same color as Ben Prime's pants. She also wears black leggings and green socks. She wears white shoes.

In Anodite Form

As an Anodite, her hair becomes white with bright pink outlines. Her skin turns t a fading pink-purple. Her sweater becomes light blue and the collar and sleeve cuffs become blue. The 10 on her sweater is now the same blue as her collar. She also wears a blue skirt and blue socks now. She no longer wears leggings. Her shoes are the same blue as her sweatshirt.


Gwendolyn Tennyson used to be a happy, optimistic girl up until her 10th birthday. Her father and Ken had to go on a mission and they missed her birthday party. Ben 10,000 promised her that he would make up for it and spend more time with her, but he never did. Ben 10,000 became more busy and spent less time with her and more time with Ken and Glen. Gwendolyn is now a negative girl who is never happy.


Before Season 2 (The New Omniverse)

In Failure: Part 2, due to Ben's choosing of the Ultimatrix MK10, reset the future and she became his daughter in this future.

Powers and Abilities

Unlike Ben and Ken (Ben's cousin) and like Gwen Tennyson, her father's cousin, she inherited her great-grandma Verdona's powers, or the "Spark" as she calls it. Gwendolyn can control magic and mana, being taught by Ben 10,000 and Gwen Tennyson. She also is great at hand-to-hand combat skills and is very smart for her age.


Like her father, Ben 10,000, she has inherited his allergy to peanuts and coulrophobia, the fear of clowns. Since she is only a teenager she still has a lot to learn about her powers.



  • Credits to Dio for the base and CaT for the background removal.
  • The idea for Gwendolyn playing a major role in The New Omniverse came from an early idea of making an alternate and evil version of Julie Yamamoto.
The New Omniverse
Waybig (Creator) - Creeper - Jose - Sen - Dio - Rex - Omniverse9


Ben Tennyson - Gwen Tennyson - Kevin Levin - Rook Blonko

Ben Tennyson (Dimension 23) - Benjamin Tennyson (Dimension 01) - Nega Ben - Professor Paradox - Bad Ben - Jen Tennyson - Ben Tennyson (Dimension 7) - Argit - Eon - Sugilite - Albedo (Dimension X) - Gwen Tennyson (Gwen 10 Timeline) - Ben Tennyson (Ben 10,000) - Ben 10,000 (Alternate Future) - Kai Green - Ken Tennyson - Gwendolyn Tennyson - Kai Carson -


Arctiguana - Big Chill - Cannonbolt - Ultimate Ditto - Echo Echo - Gravattack - Humungousaur - Jetray - Spidermonkey - Swampfire - Upgrade - Way Big - Wildmutt

Airhead - Cooldown - Electricyeti - Freezelizard - Muck Amuck - Short-Start - Speedyquick - Vomit Man


Infern - Jeff - Dr. Psychobos - Psyphon - Project Famigilia - Eon

Ben X - Vilgaxzarro - Vilgax - Sunder - Zombozo (Thumbskull - Frightwig - Acid Breath)

Geniosapien - Vyroid

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