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Gwen Tennyson
Gwen Tennyson.png
Gwen Tennyson as depicted in (from left to right, top to bottom) Ben 10 (2005), Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse, and Ben 10 (2016)
First appearance And Then There Were 10 (2005)
Created by
  • Duncan Rouleau
  • Joe Casey
  • Joe Kelly
  • Steven T. Seagle
Portrayed by
  • Haley Ramm (Race Against Time)
  • Galadriel Stineman (Alien Swarm)
Voiced by
  • Meagan Smith (2005–2008; 2012)
  • Tara Strong (future; 2006–2007)
  • Ashley Johnson (2008–2014)
  • Montserrat Hernandez (2016–Present)
Nickname(s) Gwen
Aliases Lucky Girl
Species Human (with Anodite heirtage)
Children Eunice / The Unimatrix (genetic copy)
Nationality American
Abilities Powers:
  • Mana manipulation, detection and absorption
  • Clairvoyance
  • Magic
  • Enhanced Durability


  • Expert Martial Artist
  • Enhanced Intelligence
  • Olympic level gymnastics
  • Enhanced Agility

Gwendolyn "Gwen" Tennyson, occasionally known as Lucky Girl, is a fictional character of the Ben 10 franchise. The paternal first cousin and best friend of title protagonist Ben Tennyson, Gwen is a core member of Ben’s team who frequently aids him in his various adventures.

Highly intelligent and a skilled martial artist, Gwen later develops magic abilities that are eventually revealed to be alien in nature.

Gwen was created for Ben 10 (2005–2008), in which she was voiced as a 10-year-old by Meagan Smith, with Tara Strong as her future version. Smith was replaced by Ashley Johnson, who voiced the teenage Gwen for the sequel series Ben 10: Alien Force (2008–2010), Ben 10: Ultimate Alien (2010–2012), and Ben 10: Omniverse (2012–2014). Montserrat Hernandez currently voices the character in the Ben 10 reboot (2016–Present).

Fictional character biography

Ben 10 (2005–2008)

In the series, Gwen Tennyson (Meagan Smith) is sent by her parents on a road trip with her Grandpa Max (Paul Eiding) and her cousin Ben (Tara Strong). She and Ben constantly argue, however they are both shown to deeply care for each other and their grandfather. Following Ben's acquisition of the Omnitrix, the trio embark in a series of adventures, encountering various extraterrestrial and supernatural entities, including master magician Hex (Khary Payton) and his niece Charmcaster (Kari Wahlgren) , the latter of whom detects a "magical aura" within Gwen, which she begins tapping into, acquiring magical powers of her own, after learning she would from a future version of herself (Tara Strong), after procuring a small book of spells from Charmcaster in the episode "A Change of Face". On two occasions, Gwen uses artifacts sought by the master magicians known as the Charms of Bezel to acquire incredible and unique powers and abilities to become a superhero by the name of "Lucky Girl". Besides magic, Gwen's biggest power is her intelligence: she is a computer expert and revealed to have extensive knowledge of History (episode "Hunted") and Science (episodes "Tourist Trap" and "Monster Weather"). She is also a skilled martial arts practitioner and adept gymnast.

Ben 10: Alien Force (2008–2010)

Set five years after the end of the original series, Gwen Tennyson (Ashley Johnson) is now a black belt in karate, but tends to favor using her powers. She is capable of creating energy constructs for nearly any purpose, usually creating platforms to levitate herself (and others), beams to grab enemies, circular blasts to knock enemies back, projecting beams from her eyes that seem to simulate heat vision, and opening up interdimensional portals, which she uses to assist her cousin Ben (Yuri Lowenthal) after the disappearance of their grandfather forces him to put back on the Omnitrix. In the episode "Everybody Talks About the Weather", the pair's former enemy Kevin (Greg Cipes) tells Gwen her powers and abilities originate from her "alien bloodline", which she refuses to believe. In "What Are Little Girls Made Of?", Gwen discovers this to be true, that her paternal grandmother, Verdona, is an energy being known as an Anodite; a magic-wielding race made of mana, a substance of magic, from the distant planet Anodyne, and that Gwen seems to be the only human descendant of her to have inherited her powers. Verdona offers to take Gwen to her home planet and train her in the immense mystical and magical ways of the Anodites, but Gwen prefers to remain on Earth with Ben and Kevin, later coming into conflict with a returned Charmcaster and Michael Morningstar, who after initially seeking to absorb her powers, seeks revenge against her after her taking back her powers reduced him to a husk which he dubbed "Darkstar". Gwen later unleashes her true Anodite form for the first time in "War of the Worlds: Part 2", succeeding defending the world from the Highbreed. During the course of the series, she develops a romantic relationship with Kevin, and is revealed to suffer from both arachnophobia and claustrophobia. Galadriel Stineman portrays Gwen in the 2009 superhero television film Ben 10: Alien Swarm.

Ben 10: Ultimate Alien (2010–2012)

Set several weeks after the previous series, Gwen Tennyson, now sixteen years old, releases her dormant, inner Anodite for the second time against Zombozo (John DiMaggio) after he attempts to kill her aunt and Ben's mother Sandra (Beth Littleford), growing to a gigantic size and shouting at him to leave the Tennyson family, as well as Kevin's family, alone, terrifying him before letting him go to spread the word to all of their other enemies. Gwen also discovers her black-haired near-identical cousin Sunny (also voiced by Ashley Johnson) is also an Anodite and once again encounters Charmcaster and Darkstar, the pair now engaged in a romantic relationship after Charmcaster failed to use the Great One Dagon to resurrect her father, before helping Ben save the universe in destroying Dagon and his Esoterica. Ben 10/Generator Rex: Heroes United, a one-hour crossover with fellow Man of Action series Generator Rex, aired on November 25, 2011 on Cartoon Network, in which Gwen is featured towards the beginning and in a flashback in a cameo appearance.

Ben 10: Omniverse (2012–2014)

Unlike in previous series, Gwen is a recurring character in the modern day, only popping up occasionally to assist Ben due to now attending college. She is often depicted in flashback sequences to when she was 11-years-old, revealing she had developed a crush on Kevin at that time. Immediately after the previous series, Gwen is seen with Ben and Kevin chasing Zombozo through Bellwood. Shortly after fighting and capturing Zombozo, Gwen says her goodbyes to Ben because she is heading to college since she took honor classes. She then tells Ben to stay out of trouble and gets into the car with Kevin (who also reveals that he will be staying with Gwen, but near campus), and the two drive off, leaving Ben to deal with Zombozo. Sometime later, she makes the decision to take up the mantle of Lucky Girl again, using a glamour-spell to change her appearance. She is later shown to attend a magic class taught by a redeemed Hex, after he finally overcomes his depression, him having become her favorite teacher, before he is trapped as a stone totem by his niece Charmcaster. Later, after being freed, he and Gwen keep Charmcaster as a stone totem herself under the hope that she can get better someday herself. At the end of "A New Dawn", after watching the new universe be created, Ben calls Gwen to get Kevin as he proposes that the trio and his partner Rook Blonko (Bumper Robinson) go on a road trip together to explore the universe that they watched being created.

Ben 10 (2016–2021)

Ben 10 introduces a re-imagined Gwen (in her 10-year-old form), her cousin Ben, and Grandpa Max, as they travel the country during summer vacation. When Ben finds the Omnitrix, a mysterious watch that transforms him into 10 different aliens, a world of extraterrestrial superpowers opens up to him; Gwen's form as Lucky Girl in the previous continuity exists as a popular pre-existing multimedia franchise of which she is a fan, while her enemy "Kevin 11" has a crush on Gwen, to which she is oblivious.

Concept and creation

Original Gwen
The original design of Gwen from the original pilot of Ben 10 (2005), in which the character was developed as a classmate, best friend and potential romantic interest of Ben's.
Gwen Concept
Glen Murakami's original concepts for Gwen.

Ben 10 was created by Man of Action (consisting of comic book creators Duncan Rouleau, Joe Casey, Joe Kelly, and Steven T. Seagle) and was produced by Cartoon Network Studios. The group worked on the concept of Ben 10 and its title character roughly three years before Cartoon Network picked up the series. Dave Johnson also helped in the design development. Gwen was originally developed to be a classmate, best friend and potential romantic interest of Ben's accompanying on his road trip with his grandfather. Later in development, she was changed to be his cousin, the pair being exactly the same age.

Gwen's original design, including a yellow t-shirt and ponytail, was inspired by the original design of Ben Tennyson, the red hair retained for all series, while the ponytail would be incorporated into her outfit redesign by Glen Murakami for the last season of Alien Force, the entirety of Ultimate Alien and the first season of Omniverse. Her head and hair were reworked by Glenn Wong, who also gave the character her blue top in Alien Force, while colors were added by Chris Hooten.

The original concept behind the characters was later cited as the primary inspiration for the characters of Patrice Blazing and Nate Timely in PopCap Games and Dark Horse Comics' Plants vs. Zombies comic series, with Patrice designed after Gwen and Nate after Ben.


In the original series, Gwen is portrayed as an intelligent, mature but usually stubborn and smart-mouthed when it came to talking with Ben. Her quick thinking and good instincts give her an edge in dealing with dangerous situations.

As she got older, she became even more mature, caring, and sympathetic. Her affection towards her cousin Ben, became more clear as well. Gwen is willing to forgive villains for their wrongdoings, the most notable being Kevin, if she believes they have changed for the better.

Despite being far more mature and reasonable than Ben and Kevin, Gwen is somewhat hot-headed and can lose control of her abilities if angered enough.

Powers and abilities

Due to her Anodite (a fictional alien race of energy beings) heritage, Gwen is able to manipulate mana (life energy).


In the original series, Gwen has shown a latent knack for magic, able to handle multiple magical artifacts. In the third season, after keeping the villain Charmcaster’s spellbook, Gwen begins casting spells and practicing magic. Her abilities manifest as a light blue energy. Despite abandoning these tactics in favor of her Anodite powers starting in Alien Force, she continued casting spells later on Ultimate Alien and Omniverse.

Mana manipulation

Starting in Alien Force, Gwen’s abilities have progressed to a magenta-colored energy. She soon discovers her Anodite heritage and comes to learn the energy she manipulates is mana, a life force energy present in all living beings. Mana is the basis of magic, which explains Gwen’s previous magical proficiencies.

By manipulating mana, Gwen is able to create forcefields, energy blasts, beams, stepping stones and energy constructs. She is also able to track living beings by sensing their mana and can absorb or generate mana at will. Through her powers, she is also capable of telekinesis, teleportation, clairvoyance and healing.

Anodite form

Gwen is able to assume an Anodite form. In this form, she is dark purple in color, with long glowing pink/white hair. In this form, she is capable of growing in stature, flight, and immortality.

Martial arts

Gwen is a skilled martial artist and has been practicing since the original series. She is trained in Taekwondo and Jiu-jitsu.


Gwen is highly intelligent and graduated high school early at 16.


Voice actors

She is voiced by Meagan Smith in the 2005 original series as 10-year old Gwen to the show's finale in 2008. Smith reprises her role in 2012 in the film Ben 10: Destroy All Aliens.

In the 2008 sequel series, Ben 10: Alien Force; teenage Gwen (15 years old), is voiced by Ashley Johnson (replacing Smith) and continued to voice Gwen in both Ben 10: Ultimate Alien and Ben 10: Omniverse respectively. In Omniverse, she voices both the kid and teenage of Gwen, as well as all her alternate timeline counterparts.

Tara Strong voices Gwen as an adult from an alternate timeline in the original series for two episodes ("Ben 10,000" and "Ken 10").

Gwen is voiced by Montserrat Hernandez in the 2016 reboot.


Gwen is played by Haley Ramm in Ben 10: Race Against Time and by Galadriel Stineman in Ben 10: Alien Swarm.

See also

Kids robot.svg In Spanish: Gwen Tennyson para niños

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