Gwendolyn Tennyson
General Information
Species Human/Anodite
Home World Earth
Residence Bellwood
Age 18
Affiliations Ben's Team
Occupation(s) Hero
Powers and Abilities
Abilities Mana Manipulation
Mana Absorption
Mana Detection
Memory Manipulation
Portal Creation
Anodite transformation
Astral Projection
Expert Martial Artistry
Enhanced Intelligence
Flight (Anodite Form)
Size Alteration (Anodite Form)
Equipment Charm of Telekinesis
Gwen's Spellbook
Staff of Ages
Relatives Frank Tennyson (father)
Natalie Tennyson (mother)
Carl Tennyson (uncle)
Sandra Tennyson (aunt-in-law)
Kenneth Tennyson (older brother)
Ben Tennyson (cousin)
Max Tennyson (grandfather)
Verdona Tennyson (Earth-50)/Timeline 1 (grandmother)
Eunice (genetic copy)
Alias Gwen
Lucky Girl
Baby (Kevin)
Voice Actor Ashley Johnson
First Appearance Change

Gwendolyn "Gwen" Tennyson is a human-Anodite hybrid Plumber, the paternal cousin of Ben Tennyson, and (along with Kevin Levin) a front line member of his team in Ben 10: Protector of the Omniverse. She is the Timeline 1 equivalent of the canon Gwen.


She has her Heroes United appearance, but she wears an outfit resembling her Alien Force Season 3 outfit. However, her shirt is blue, her pants are white and her vest is red, and it is shaped differently, also now having a zipper. She wears a black belt with her signature cat symbol in the middle, colored light pink. She also now has bangs.

When at school, she wears her Ultimate Alien outfit.


At times she trusts others too quickly, and that may be a disadvantage or even injure her. She can handle dangerous situations, despite their often unfavorable conditions.

Gwen is at times shown to be very concerned with the well-being of things around her, such as her surroundings, the people around her, and those she cares about. She is very strong both physically and mentally and well mannered, despite her inflating sarcasm and ego at certain times. Gwen is a very caring, compassionate person, as shown by her acceptance of Kevin's past and recent actions, as well as her statements that she does not care about Kevin's appearance.

Powers and Abilities

Her mana and magic powers have slightly improved since Omniverse, as has her knowledge of martial arts.


She is overprotective of her friends and family, especially Kevin. When they are badly hurt, she will not be able to think straight, instead relying on brute force.


In Change, Gwen mostly tries to convince Ben to return to the hero business, albeit subtly. She also tries to mend Ben and Kevin's friendship by telling Ben that Kevin likes him. When the three of them meet for dinner at Max's diner, Myaxx sends them a distress call, telling them to come to Galvan Mark II as Azmuth went missing. Gwen manages to persuade Ben to come along, though Azmuth died.




Love Interests

  • Kevin Levin:



All episodes


  • Credits to Echoson for the infobox image, and credits to Reo 54 for the first image in the gallery.
  • Unlike her canon equivalent, she did not go to college early.
  • The cat symbol on her belt acts as a locket and contains a picture of her and Kevin inside.


Ben 10: Protector of the Omniverse
Creator: UltiVerse
Co-Writer(s): Bat24 - PrimalFan - The Awesome Jack

Artist(s) and Other(s): Echoson (Artist) - PrimalFan (Artist) - Ultra3000 (Idea Provider)

Ben Tennyson - Gwen Tennyson - Kevin Levin
Timeline 1
Argit - Azmuth (deceased) - Bellicus - Carl Tennyson - Cash Murray - Charlie Grant - Coach Kaye - Collin Matthews - Crystal Phoenix - Emily - Eunice - Frank Tennyson - Galvan Soldiers - Gluto - Jimmy Jones - Jonesy - J.T. - Julie Yamamoto - Kenneth Tennyson - Max Tennyson - Myaxx - Mr. Baumann - Natalie Tennyson - Pakmar - Plumbers (Alan Albright - Blukic - Bromeba - Bryk - Chortle - Cooper Daniels - Driba - Elliot - Fistina - Helen Wheels - Jerry - Krayec - Leadfoot - Manny Armstrong - Magister Arnux - Magister Hulka - Magister Patelliday - Maryana Autumn - Molly Gunther - Morty - Stenner - Stick Doug - Tack - Zorian) - Professor Paradox - Sandra Tennyson - Serena - Ship - Tetrax Shard - Zed

Timeline 4
Multiplex - Sibyl - Titan - Carl Tennyson - Julie Yamamoto - Sandra Tennyson

Timeline 23
Ben Tennyson - Tetrax Shard - Sevenseven - Azmuth

Timeline 33
Gwen Tennyson

Timeline 999

Timeline 1
Alien X - AmpFibian - Antigravitesla - Arctiguana - Armodrillo - Astrodactyl - Atomix - Ball Weevil - Big Chill - Blitzwolfer - Bob the Blob - Brainstorm - Bullfrag - Buzzshock - Cannonbolt - Chamalien - Chromastone - Clockwork - Crashhopper - Dartroot - Decagon Vreedle - Diamondhead - Ditto - Domino - Eatle - Echo Echo - Evomania - Eye Guy - Fasttrack - Feedback - Four Arms - Frankenstrike - Ghostfreak - Glitch - Goop - Gravattack - Grey Matter - Gutrot - Heatblast - Heavysplitter - Humungousaur - Jetray - Juryrigg - Kickin Hawk - Lodestar - Mimisthetic - MindFlip - Mole-Stache - Nanomech - NRG - Octolord - Overflow - Pesky Dust - Plantapocalypse - Porquillpine - Portaler - Rath - Ripjaws - Rocks - Sandbox - Shocksquatch - Slow Hands - Snare-oh - Sparkhenge - Spidermonkey - Spitter - Squidstrictor - Stinkfly - Swampfire - Terraspin - Thriller Whale - Toepick - Upchuck - Upgrade - Venomsnake - Vine-al Warning - Water Hazard - Way Big - Whampire - Wildmutt - Wildvine - Wolf Calendar DS - XLR8
Ultimate Arctiguana - Ultimate Big Chill - Ultimate Cannonbolt - Ultimate Echo Echo - Ultimate Goop - Ultimate Gravattack- Ultimate Heatblast - Ultimate Humungousaur - Ultimate Rath - Ultimate Spidermonkey - Ultimate Swampfire - Ultimate Way Big - Ultimate Wildmutt
Season 1

Season 2

Season 3

Season 4

Season 5

Season 0
Azmuth's Invention - Wrath of the Xenocytes - The Trouble With Doubles - Escape From the Infinimatrix - Bait - Fusing Some Enemy Butt - Factorial Doom - Wrath of Vilgax - A Trip To...Nowhere - To The Past - Clown Catastrophe - Forever Stealing - Rumors and Lies - Summer Again - Truce - Ultimate Escape - Hero's Challenge - Controlled - Ben-Blank: Protectors of the Omnigizer - Prom Not To Be - Doom Date - Behind the Mask - Quest to Conquer - When Things Are Altered - Play It Back Again - Ben 10: Fall of the Omniverse - Surprise Visit - The Chronian Invasion - Aggression

Related Pages
Ben 10: Omnifinite - Earth-50 - Fan List

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