34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity
Rebootomnitrixsymbol Click here to see the Reboot Continuity version of this article

Gwendolyn "Gwen" Tennyson is an Anodite Plumber, the paternal cousin of Ben Tennyson and was a main member of his team during the first 3 shows.


Regular Appearances

Human Form

In the original series, Gwen had short orange hair held by a blue hair clip and green eyes and wore a blue raglan shirt with a cat logo on her chest, white capris, and a pair of white shoes with dark blue stripes.

In the first and second seasons of Alien Force, she wore a white shirt under a dark blue sweater, black stockings under a black mini skirt, and black high heels. Her hair had also grown longer and was down to her waist.

In the third season of Alien Force, as well as The Transmogrification of Eunice, she wore a red shirt paired with a black vest, gray pants, and black flats. Her hair was worn in a high ponytail.

In Ultimate Alien, Gwen's outfit was similar to her outfit from the first two seasons of Alien Force, but with a red sweater instead of a blue one.

In Ultimate Alien, she wore a standard Plumber suit during a few of her off-world excursions.

In the first episode/season of Omniverse, Gwen still had her ponytail, but it was much shorter. She wore clothes similar to her Alien Force Seasons 1-2 outfit, except she now wore long white socks that went up to her knees with black mary janes. She also had freckles.

For the rest of the series, she has shorter hair with a blue hairclip, a light blue T-shirt with her cat logo on it, a blue plaid miniskirt and wears blue-tinted glasses. She also wears long white socks and blue sneakers.

11-year-old Gwen in Omniverse looks just like she did in the original series except that she has freckles and the cat logo on her shirt is now bigger.

Anodite Form

In Alien Force and Ultimate Alien, in her Anodite form, she looked like a slightly smaller version of Verdona.

In her new Anodite form in Omniverse, her skin turns purple, but her hair remains the same length, but is now made of mana and is pink and her eyes also turn pink. Her glasses also become a blue mask and she now wears blue gloves and her shirt is a darker blue with a light blue stripe. Her shirt cuts off and reveals her midriff and naval. She also wears blue boots, a dark blue miniskirt with a light blue stripe and a belt. The cat logo on her shirt also becomes black with pink eyes.

Occasional Appearances

Her Lucky Girl outfit is worn in Lucky Girl, Tough Luck, Time Heals, and Enemy of My Frenemy.

During water-based activities in the original series, she wore a purple one-piece swimsuit with a light blue diagonal stripe across her midriff in A Small Problem and a teal green one in Divided We Stand.

In Back with a Vengeance, she wore a yellow raincoat while touring Niagara Falls on a ship, and later wore a Plumber suit when she went to look for Ben in the Null Void.

In Secret of the Omnitrix, while trying out clothes at the mall, she wore yellow-tinted glasses, a light blue collared shirt, a blue vest, black pants, and red and white shoes.

In Ben 10 Returns: Part 1 and It's Not Easy Being Gwen, she wore her karate uniform.

In What Are Little Girls Made Of?, she wore a white bikini.

In Save the Last Dance, she wore a white dress.

In Birds of a Feather, when on the Moon, she wore an orange spacesuit with four arms.

In In Charm's Way, she wore a black bikini.

In Time Heals, she briefly wore glasses and a long coat over her Lucky Girl outfit.

In Escape from Aggregor, she wore a pale blue winter coat and blue pants.

In Basic Training, while at the barracks in the Plumbers' Academy, she wore an olive tank top and black shorts.

In It's Not Easy Being Gwen, she wore a grey T-shirt and black running shorts during her morning run and later wore a white T-shirt and red shorts during her gym class.

In Inspector 13, Gwen wore a violet tank top with a white skirt and tennis shoes. She later wore the Ultimatrix symbol on her chest.


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. However, she's sometimes too trusting with people who want to exploit her good will, leading her (or others) into harm's way.

As she got older, she became even more mature, as well as becoming more 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've changed for the better. Although her intelligence and knowledge have only increased since the original series, she's not completely free of her naivete, and can be arrogant at times as well.

Despite being far more mature and reasonable than Ben and Kevin, Gwen is somewhat hotheaded and can lose control of her mana if angered enough.[3]

Gwen occasionally prioritizes things incorrectly,[4] seen when she put more importance on Ben arriving to Julie's tennis match on time than stopping the Forever Knights' armed robbery of a museum.


Powers and Abilities

  • Mana Manipulation
  • Mana Shields
  • Mana Projectiles
  • Mana Telekinesis
  • Mana Tentacles
  • Mana Whips
  • Dowsing
  • Mana Flight
  • Anodite Form
  • Charm of Bezel
  • Magic
  • Enhanced Durability
  • Enhanced Agility
  • Enhanced Jumping
  • Mana Solidification
  • Light Generation
  • Expert Martial Artistry

Mana Manipulation and Energy Control

Gwen's magical powers are of alien descent from her grandmother Verdona, a member of a free-spirited alien race of pure energy beings known as Anodites, from the planet Anodyne. Gwen didn't inherit the powers, but shares a "knack" for mana manipulation, possibly because Verdona manipulated mana in her human form.[DM 1] Verdona herself has explained to Gwen that, like herself, she is an Anodite and has "the spark," and thus is able to freely manipulate and control mana or life energy, the substance of magic.[5]

Gwen can create energy blasts, streams, waves and bolts, as well as energy force-fields, shields and barriers. Her powers are mainly used like energy constructs, allowing her to make many different types of structures like, hammers, protective helmets, battering rams, beams to grab and throw enemies, stepping stones/platforms to carry her and others though air, safety nets, magic weapons: swords, blades, punches, etc.. It also turns out Gwen can also synchronize her martial arts styles with her energy manipulation abilities.

Gwen has more mana-related powers: She can find any person she wants by detecting the traces of mana that he/she left[6] or by being at one with the cosmic mana.[7] She can distinguish Ben and Albedo by reading their auras.[DM 2] She can also draw in mana from everything around her. She also has a degree of enhanced strength and durability.

She also has the abilities of telekinesis, teleportation, heat vision, clairvoyance, telepathy and healing herself and other living beings. She can also transform into an Anodite.[8] In her Anodite form her powers are greatly enhanced, giving her the abilities of flight and size alteration.[9]

In addition, her Anodite powers get stronger over time.

Magic and Spells

Gwen is seen using magic through casting magical, mystical spells, and reciting spoken incantations thus enabling her to use various magical powers and abilities.

On two occasions, Gwen used the five mystical Charms of Bezel to become a superheroine by the name of Lucky Girl. At first, her power and ability drew from the luck-granting Charm of Bezel, which innately gave her complete and perfect luck in everything she did. While wearing the charm, any action she took would result in a chain reaction benefiting her original intent, but usually injuring Ben in the process.[10] Gwen later brought back her superhero identity after obtaining the legendary lost Keystone of Bezel, which greatly increased her natural abilities to superhuman levels rather than just affecting her luck.[11] Both times, Gwen was forced to retire when the five Charms and Keystone of Bezel were destroyed.

Gwen claims that being self-taught in magic is not so easy as it looks.[12] Trying to get into Yahwahtacsip she mistakes its name for "Wah Di Tah," saying that she knows how to read it but not pronounce it correctly.

Later Gwen begins to cast spells and recite spoken incantations again.[13] Gwen is less knowledgeable than Charmcaster and Hex, having been self-taught, but she is also more powerful than Charmcaster until Charmcaster obtained the Alpha Rune, after which she was powerful enough to defeat Gwen with ease.

She has also learned to astral project through magic, like when she found Ben inside the Ultimatrix.[14]

Gwen's spells seem to react to Gwen's emotional desires.[pop-up 1][15]

Athletics and Martial Arts

Gwen is a capable gymnast and martial artist. Even in the original series, she was occasionally shown to be quite good in hand-to-hand combat fights against enemies who had normal strength levels. She was part of her school's Jujutsu team. At the age of fifteen it is revealed that she has already received a black belt in Taekwondo.[16]

When preferring to use her athletics during fights or when she cannot rely on her magical and Anodite powers, she is shown to be highly skilled in hand-to-hand combat.

Gwen does martial arts, horseback riding, softball, skiing and cross country.[DM 3] Gwen has been shown creating a whip of mana energy and using it as a weapon along with her fighting skills. When Kevin asks her how she learned it, she states remembering it from an old movie.[17]

Knowledge and Intelligence

Gwen is very intelligent and knowledgeable. Before discovering her dormant Anodite powers, she would often use her superior intellect to help Ben solve problems. She is shown to be a bit of computer and tech wiz as well. She has her own laptop which she uses to research enemies she meets.[18]



Ben 10

Alien Force

Ultimate Alien



16 years old

Season 1
Season 2
Season 3
Season 4
Season 5
Season 6
Season 7
Season 8

11 years old

Season 1
Season 2
Season 3
Season 4
Season 6
Season 8


Cartoon Network Action Packs

Gwen has appeared in every action pack, except for Old Friends, Plumbers' Kids, It's a Set Up and twoSome.

Chapter Books

Ben 10: Omniverse


Video Games


  • Gwen's birthday is in December.[19][20]
  • Gwen's favorite flowers are yellow roses.[21][24]
  • Gwen hates mushrooms.[22]
  • When she was 10, Gwen had a 4.2 GPA, she was the president of the Computer Club, treasure of the Science Society, volunteer at several local charities, and a member of her school's Jujutsu team.[25]
  • Gwen isn't too fond of some of Ben's aliens, namely Stinkfly,[26] Goop,[27] and Upchuck.[28]
  • Gwen has arachnophobia[29] and claustrophobia.[30]
  • Gwen is Verdona's favorite grandchild.[5][31]
  • Gwen has much more control over her abilities and her Anodite form than we've seen.[MW 1]
  • Gwen lives on-campus in Omniverse.[MW 2]
  • Gwen does not yet know her major.[MW 3]
  • Gwen dislikes being called an "energy being."[5]
  • Gwen felt out of place when she was in high school.[5]
  • Dagon described Gwen as the most powerful being in the main dimension.[32]
    • Matt Wayne later said that he doesn't think so,[MW 4] even though he wrote the episode.
  • Gwen has the potential to live as long as she wants to, if she ever chooses to allow Verdona to train her.[DM 4]
  • Gwen and Kevin are famous on Earth, just not nearly as famous as Ben.[DM 5] Dwayne McDuffie compared their level of fame to that of American television personality Gayle King.[DM 6]
  • Gwen can go back in time to change events, but doesn't because she fears changing history for the worse, as she accidentally did once before.[DM 7]
  • In Alien Force, Gwen was in her freshman year of high school.[DM 8]
  • Gwen's DNA was sampled and randomized into the Unitrix to create Eunice.[33]
  • Gwen's Lucky Girl costume in the original series and Alien Force ties into the cat design on her favorite shirt.[pop-up 3][10]
  • By the time of mid-Season 1 of Ultimate Alien, Gwen had already written her college essays.[DM 9]
  • When they were kids, disliking Max's cooking was one of the few things Ben and Gwen agreed on.[pop-up 4][26]
  • Before the events of the original series:
    • Ben and Gwen once did not speak to each other for two months over an argument about a stick of gum.[pop-up 5][34]
    • At one point, the arguing between Ben and Gwen had gotten so bad that their parents refused to take vacations together anymore.[pop-up 6][35]
  • Whenever Gwen transforms into her Anodite form in Alien Force and Ultimate Alien appearances, she gains the ability to fly. However, in Omniverse, Gwen's Anodite form has been shown using Mana constructs and later the Charm of Telekinesis to fly. Despite that, she can still fly on her own while in Anodite form.[DJW 3]
  • In the initial stages of the original series' development, Gwen was written as a classmate who happened to be friends with Ben, and had no familial relation to him.[pop-up 7]
    • Gwen wasn't even supposed to come on a road trip. She was going to a summer study program instead.[pop-up 8][35]
  • In the original series, Gwen had her own plans for a summer vacation.[36] It was Max who convinced her mother to push her to go on the road trip.[36][37]
  • One of Gwen's concept designs in the original series had long hair and a red and yellow raglan shirt with a mushroom on it. However, Cartoon Network nixed the mushroom design due to drug connotations.[DJ 1]
  • Gwen's design in Seasons 1 and 2 of Alien Force was created by Glen Murakami and finalized by Glenn Wong, with colors added by Chris Hooten.[GW 1]
  • Gwen and Kevin's "college" redesign was the only redesign they were going to get, but executives wanted them to look more similar to their Alien Force/Ultimate Alien designs for their first appearance, so they received "transition" designs for the first episode.[DJW 1]
  • Gwen's second design in Omniverse bears some resemblance to Velma Dinkley from the Scooby-Doo! franchise.
  • Gwen made an appearance in the fifth episode of the sixth season of Robot Chicken, Hurtled from a Helicopter into a Speeding Train.
  • At least one student at Friedkin University probably knows that Gwen is Lucky Girl.[DJW 4]
  • Not all of Gwen's alternate counterparts are Anodites.[DJW 5] For example, Dimension 23's Gwen[DJW 6] and Gwen 10 have been confirmed to not be Anodites.[DJW 7]
    • A counterpart of Gwen does not exist on Rex's home universe.[DR 1] This was proven true during Ben's visit there, as he hypothesized that Gwen may not exist on Rex's Earth.[38]
    • Aside from not being an Anodite, Dimension 23's Gwen is cousins with Ben 23[39] and shy.[DJW 8]
    • Gwen's counterpart in Benzarro's reality is an unpowered scientist constantly working on a cure for Benzarro from a secure secret bunker.[DJW 9]
    • Gwen's counterpart in Nega Ben's timeline is a cheerleader[DJW 10] of average intelligence. However, she acts less smart than she really is.[DJW 11] Much like her Prime Timeline counterpart, Gwen is dating Nega Ben's version of Kevin.[DJW 12]
    • It is unknown if a counterpart of Gwen exists on Mad Ben's dimension.[DJW 13]


  1. Manny Tennyson was mentioned in Gwen 10, a non-canon episode. It is unknown if he exists in the canon timeline.


Crew Statements

Dwayne McDuffie

Derrick J. Wyatt

Matt Wayne

Duncan Rouleau

Dave Johnson

Glenn Wong


See Also

Tennyson Family Ben TennysonGwen TennysonMax TennysonCarl TennysonSandra TennysonFrank TennysonNatalie TennysonKenneth TennysonGordon TennysonBetty Jean TennysonJoel TennysonCamille Mann-TennysonVera TennysonClyde FifeBen's DogBig Chill's OffspringVerdona
Levin Family Kevin LevinMrs. LevinDevin LevinZedHarvey Hackett
Rook Family Rook BlonkoRook DaRook BrallaRook SharRook ShimRook ShiRook Ben
Plumbers MagistrataMagister PatellidayMagister ArnuxMagister PykeMagister HulkaMagister CoronachHobbleMolly GuntherBranniganZorianAlan AlbrightHelen WheelsManny ArmstrongCooper DanielsLucy MannBrykChortleTackWat-SennScoutJerryI.M. WerfzelLeadfootMortyElliotBromebaStick DougRobucketFistinaWes GreenXyleneMagister LabridMagister Prior GilhilVictor ValidusPierce Wheels
Secondary Characters Cash MurrayEsterHexIgnacius BaumannJ.T.Jimmy JonesJulie YamamotoKai GreenPakmarProfessor ParadoxRad DudesmanReinrassig IIIShipSkurdTetrax Shard
Galvan AzmuthAzmuth's FatherBlukicDribaLuhleyUjinTeacherFergiChadzmuthY-itDuffyZennithSoldiersMajor
Andromeda Aliens AndreasBivalvanGalapagusP'andorRa'ad
Sentient Ultimate Forms Sentient Ultimate Big ChillSentient Ultimate CannonboltSentient Ultimate Echo EchoSentient Ultimate HumungousaurSentient Ultimate SpidermonkeySentient Ultimate Swampfire
Forever Knights Sir GeorgeWinstonforeverduke838Squire
Galactic Enforcers UltimosSynaptakTini
Actors Abel NorthCerebrocrustacean ActorDeefus VeeblepisterFridgeGourmand ActorGwenettesHughJennifer NocturnePiscciss Volann ActorSwampsVilgax Actor
Atrocians Blue-WorstGreen-WorstOrange-WorstPink-WorstPurple-WorstShe-WorstSlim-WorstViolet-Worst
Kinecelerans DJE-NK8-EML-EN-8N-DT8-M
Others Alton AlabasterAmazing AlanAndyAnicetoArnoldBaby CelestialsapienBahrvadBailiffBarryBen's TeacherBezelBill GacksBillyBlowfeldBlowfishBobDr. BorgesBradPrivate BrownbagAgent BrysonBuzzCaitiffCarol SmithSergeant Cast IronCentur SquaarChicken AlienCicelySergeant CookmeisterCow AlienDeckaJudge DomstolDonovan GrandSmithDougDragonEarlEddie GrandSmithEdithEdnaEgorElsgoodElvesEmilyEuniceMrs. FangFistinaFitzFritzFrolicGar Red WindGaterboyGenaroGil SteptoeGilbertGlutoGrickGrackGeneral GroffHaplorHaroldHectorHelena XaglivHelioHervéHighbreed CouncilorsHighbreed SupremeHotel GuardHugoIgnaceousImmovable ObjectIshiyamaJamieJeffJoan MaplewoodJoeMrs. JonesJonesyJuliusDr. KellyKwarrelKyle MonitorLacknoLaurence WainrightKenkoCouncilwoman LiangLillimusha DiForestiniLobster ManAgent LockeLoovis SlerdlerkLuLucyLukikMadisonMadison's FatherMad HarangueMad RookMaliceMandyMargieMartySheriff MasonMaureen NocturneMechamorph GuardMedicMegawhattsMouldywarpMollyMother CelestialsapienMyaxxNaljian MotherNatalie AlvarezNull Void SettlersOrbParts DealerPetersonPierce's GirlfriendPorcupinePresidentProbityPyxiQuinceRandolph PervisRayonaRegisRogerColonel RozumSanctuary GuardiansScreegitSentinelSheelaneShelbyDr. ShuemanSmoothy VendorSmuggled PsycholeopterranSock VendorSpellbinderLieutenant SteelSteve CummingsSugiliteSumo Slammer Collecting BoyTechnorgTentacle VendorTetramand PriestThaddeus J. CollinsThomas JinglesTiffanyTiffinTim DeanTinyTiny's FatherTiny's MotherToby MonitorTodd MaplewoodTram DriverTrinaTrukkTwoTwoTylerVance VetteroyVexxViktoriaWaltWarriorMr. WebbOfficer WellsWhalium WhalaceWolf BlitzerMr. YamamotoYetiYosemite Park RangerZabinZaw-VeenullMr. ZuZs'iza and Zs'oiseZzzakt
Original Future ArgitBen TennysonDevlin LevinGwendolyn TennysonGwendolyn Tennyson (Ben's Daughter)J. Jonah JonesKai GreenKen TennysonKen's PetKevin LevinMax TennysonOne-Eyed Alien KidRook Blonko
Ultimate Alien Future Ben Tennyson
RAT Timeline Ben TennysonGwen TennysonMax TennysonCash MurrayEdward WhiteJ.T.Doris DaltonMr. HawkinsMr. WhittingtonMr. EnguellsMr. JenyxMrs. CarlyleConstantine JacobsOld Man
Gweniverse Gwen Tennyson
Gwen 10 (What-If?) Gwen TennysonBen TennysonMax Tennyson
Dimension 23 Ben TennysonTetrax ShardSevensevenAzmuth
No Watch Timeline Ben TennysonMax Tennyson
Comics Alien's ActorBen's ActorBig Chill's ActorChromastone's ActorEcho Echo's ActorGladiatorGoop's ActorGuardHumungousaur's ActorJetray's ActorLittle GirlLorelaiPlen StroffPresidentPrisoner From the Planet DustovSoolSpidermonkey's ActorSwampfire's Actor
Generator Rex Rex SalazarRebecca HolidayBobo HahaAgent SixCaesar SalazarDiane FarrahWhite KnightDinosaur EVO
Secret Saturdays Zak SaturdayDoc SaturdayDrew SaturdayFiskerton SaturdayKomodoZon
MAD Benjamin Franklin

Start a Discussion Discussions about Gwen Tennyson (Classic)

  • Gwen's Anodite Transformation

    6 messages
    • She went Anodite in UA whenever she was full with rage or controlled by Dagon. She didn't clearly have the hang of it until OV.
    • Alright, i have another question; how come whenever she transformed she was able to fly in UAF, but when she did so in OV, she still required ...
Community content is available under CC-BY-SA unless otherwise noted.