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34497a3fe0ef52949a1ba8e99894ed69.png This article belongs to the Classic Continuity

The Unitrix, self-nicknamed Eunice, is a prototype Omnitrix which can absorb and contain DNA of various different species. She is also one of Azmuth's creations.


Unitrix Form

In her true form, Eunice is the Unitrix, a core similar to the Omnitrix and Ultimatrix.

Unlike future models, the Unitrix resembles a container instead of a watch, but does feature a control dial that, when pressed down, turns it to its mobile DNA form (in this case, Eunice).

Human Form

After gaining human DNA from a randomised genetic sample, Eunice appears as an adolescent woman, with around shoulder-length blonde hair and bright green eyes.

When Ben's Team first found her, Eunice was completely naked, then she borrowed Ben's jacket so she wouldn't be seen naked. Afterwards, she borrowed a pink tank top, white shorts and brown flip-flops from Gwen. Since working for Azmuth on Primus, she now sports a white jumpsuit with black stripes.

There are green rectangular markings on the back of Eunice's neck. When they are pressed, Eunice turns back into the Unitrix.

In Omniverse, Eunice now wears a white dress with a black collar and one stripe in the middle. She wears black fingerless gloves and now wears black boots. Her hair is now shorter and she wears a black hairband, which resembles Gwen's season two look in Omniverse.


Eunice is kind to humans and animals, and shows love and care for everyone. She is very appreciative to those who help her, and cares about animals so much that she wouldn't eat them. Even though she is artificial, due to the fact that she takes the form of a human and has the personality of one, she doesn't like to be treated as an object.


Ultimate Alien

Sunder was hired by Azmuth to find the Unitrix when Azmuth lost it.

The Unitrix's pod was discovered in the forest at the same time Ben's Team was driving for a camping trip. After encountering her, she stayed with them for the day, bonding with Ben (who had recently broken up with Julie), the two of them were soon attacked by Sunder, who shut Eunice down and attempted to get away before Kevin and Gwen stopped him as Kevin restarted the Unitrix again.

While the four of them scuffled with Sunder that led to a muddy area, Azmuth arrived, broke up the fight, and cleared things up. He stated that Eunice was the Unitrix, a prototype version of the Omnitrix created when Azmuth wanted to preserve alien DNA by placing genetic samples in individual Unitrixes that can animate themselves to take on the appearance, and use the abilities of the DNA samples that were uploaded into them for protection. Azmuth states that when Gwen cut her hand trying to open the pod containing the Unitrix, her DNA was sampled and randomized to make a human form for the Unitrix (explaining why Eunice has blond hair while Gwen has orange/red hair). Following a brief argument, Ben allowed Azmuth, under a compromise, to take on Eunice as one of his assistants on Primus.

In Simian Says, Eunice was tending to DNA in the Codon Stream, where she found the Arachnichimp DNA had some degradation. She went to Aranhascimmia to get a fresh DNA sample, where she found the Xenocite infestation and stayed to help. Eunice was eventually thrown into a pool of Xenocites and turned into a DNAlien. She fought Swampfire, but was cured. She eventually used Simian to revert all the Arachnichimp DNAliens to normal.

Eunice was seen in a flashback in The Ultimate Enemy: Part 2.


Eunice makes a cameo in The Most Dangerous Game Show.

Powers and Abilities

Eunice copying a rabbit's abilities into herself

Eunice is capable of storing DNA of various different species. Unlike the Omnitrix and Ultimatrix, Eunice is not connected to the Codon Stream, and unlike the completed Omnitrix, she can only hold one DNA sample.[DM 1]

Eunice was shown to be able to copy the powers and abilities of different animals and then to manifest traits of these animals without changing her form. Whatever Eunice absorbs, she only has the abilities of it for ten or so minutes.[DM 2]

In addition, local wildlife seemed to be attracted to Eunice to the point where normally shy animals would gather around her and more dangerous animals (like a bear or snake) would be tamed by her presence.

Prior to Simian Says, Eunice received an upgrade to have a one way subspace link to Primus for uploading DNA samples.

Powers and Abilities Replicated

Species Copied Powers/Abilities Gained
Rabbit Enhanced Jumping/Leaping
Bear Enhanced Strength
Snake Enhanced Flexibility
Arachnichimp Enhanced Agility, Enhanced Strength


If the markings on the back of her neck are pressed, Eunice will revert to the Unitrix.

Having her link to Primus active, Eunice can cause parallel signal interference which could cause the Ultimatrix to lose its connection to Primus if it is nearby. Eunice can shut it off to prevent this.

Eunice can be turned into a DNAlien. However, she can be cured by turning the Unitrix off and back on again.

According to Azmuth, Eunice is dangerous. The reason why has never been explained.


Ultimate Alien

Season 3


Season 8

Naming and Translations

Language Name Origin
Spanish (HA) Eunice
Ultimatrix (Simian Says)
From the original English name; pronounced /eu'nis/ (The Transmogrification of Eunice and one time in Simian Says) and /'eunis/ (Simian Says).
Pronounced /'unɪtrɪks/ and /'junɪtrɪks/ (normally) or /unɪ'trɪks/ (one time in Simian Says).
From the original English name.
Dub error. From Ultimatrix; pronounced /ultɪ'matrɪks/.


  • The reason why the Unitrix landed on Earth is because it was probably seeking an Omnitrix core like itself.[DM 3]
  • Some of Eunice's knowledge came from Gwen, while the Unitrix supplied the rest.[DM 4]
  • Her Omniverse design was created by Derrick J. Wyatt[DJW 1][DJW 2] and it's based on 60's go-go outfits.[DJW 3]
  • At the beginning, Eunice's origin was similar to Supergirl's arrival on Earth; she appeared in a space pod, she was fully naked, she had the DNA of Earth's heroes, and she didn't know what was happening.
    • Coincidentally, Eunice's voice actress Molly Quinn voiced Supergirl in the 2013 direct-to-video movie Superman: Unbound.
  • Eunice's role in the series somewhat mirrors that of the character Nia from the series Tengen Toppa Gurren Lagann: both were/are artificial life-forms embedded in the human genome and both have a relationship with the protagonist (Eunice's relationship to Ben being a minor one). Coincidentally, Yuri Lowenthal voices both Ben and Simon, the main character of said anime.
  • Since she was created from Gwen's DNA, Eunice is technically a member of the Tennyson family.[DJW 4]
  • Eunice knows things about the original Ultimatrix that Ben doesn't, and vice versa.[MW 1]


Dwayne McDuffie

Derrick J. Wyatt

Matt Wayne

See Also

Tennyson Family Ben TennysonGwen TennysonMax TennysonCarl TennysonSandra TennysonFrank TennysonNatalie TennysonKen TennysonGordon TennysonBetty Jean TennysonJoel TennysonCamille Mann-TennysonVera TennysonClyde FifeBig 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 ArmstrongCooperLucy MannBrykChortleBig EdTackWat-SennScoutJerryI.M. WerfzelMedicLeadfootMortyElliotBromebaStick DougRobucketBel Biv KaboomDraxFistinaWes GreenXyleneMagister LabridMagister Prior GilhilVictor ValadisPierce 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
Undertown Residents BlowfeldBuzzElián ZeeGenghis KenGilford BromleyGil SteptoeLacknoLillimusha DiForestiniLoovis SlerdlerkMedicSmoothy VendorSock VendorSponge GorbTentacle VendorToby MonitorWhalium Whalace
Others Alton AlabasterAmazing AlanAndyAnicetoBaby CelestialsapienBahrvadBailiff (Alien Force)Bailiff (Omniverse)BarryBen's TeacherBezelBill GacksBillyBlowfishBobDr. BorgesBradPrivate BrownbagAgent BrysonCaitiffCarol SmithSergeant Cast IronCentur SquaarChet RigbyChicken AlienCicelySergeant CookmeisterCow AlienDeckaDoggy BuddyJudge DomstolDonovan Grand SmithDougDragonDubbaEarlEddie Grand SmithEdithEdnaElsgoodElvesEmilyEuniceMrs. FangFiery BuddyFitzFlorenceFritzFrolicGar Red WindGaterboyGenaroGilbertGlutoGrackGrickGeneral GroffHandy BuddyHaplarHaplar's MateHaplar's BabyHaroldHectorHelena XaglivHelioHervéHighbreed CouncilorsHighbreed SupremeHotel GuardHugoIgnaceousImmovable ObjectIshiyamaJamieJeffJoan MaplewoodJoeMrs. JonesJonesyJuliusDr. KellyKenkoKwarrelKyle MonitorLarryLawrence WainrightCouncilwoman LiangLobster ManAgent LockeLouLuLucyLukikMadisonMadison's FatherMaliceMandyMargieMartySheriff MasonMaureen NocturneMechamorph GuardMollyMother CelestialsapienMouldywarpMullenMyaxxNaljian MotherNatalie AlvarezNosedeeniansNull Void SettlersOrbParts DealerPierce's GirlfriendPorcupinePresidentProbityPyxiQuinceRandolph PervisRayonaRegisMrs. RheaultRogerColonel RozumScreegitSenseiSentinel Sentinels of MonarchCaptain ShawSheelaneShelbyShip-It EmployeeDr. ShuemanSmuggled PsycholeopterranSparring PartnerSpellbinderLieutenant SteelSteve CummingsSugiliteSumo Slammer Collecting BoyTechnorgTeejTetramand PriestThaddeus J. CollinsThomas JinglesTiffanyTiffinTim DeanTinyTiny's FatherTiny's MotherTodd MaplewoodTrinaTrukkTwoTwoTylerValadis Laboratories JanitorVance VetteroyVexxViktoriaWaltWarriorMr. WebbOfficer WellsWolf BlitzerWrestlerMr. YamamotoYetiYosemite Park RangerZavinZaw-VeenullZs'iza and Zs'oiseMr. ZuZzzakt
Original Future Ben TennysonDevlin LevinGwendolyn TennysonGwendolyn Tennyson (Ben's Daughter)Kai TennysonKen TennysonKen's PetMax TennysonOne-Eyed Alien Kid
Ultimate Alien Future Ben Tennyson
Omniverse Future ArgitBen TennysonGwendolyn TennysonJ. Jonah JonesKai TennysonKen TennysonKevin LevinMax TennysonRook Blonko
RAT Timeline Ben TennysonGwen TennysonMax TennysonCarl TennysonSandra TennysonCash MurrayEdward WhiteJ.T.Doris DaltonMr. HawkinsMr. WhittingtonMr. EnguellsMr. JenyxMrs. CarlyleConstantine JacobsOld Man
Gweniverse Gwen Tennyson
Gwen 10 (What-If?) Gwen TennysonBen TennysonMax TennysonThe Seer
Goodbye and Good Riddance (What-If?) Ben TennysonGwen TennysonMax TennysonCarl TennysonSandra TennysonCash MurrayJ.T.JamieArnoldPetersonBen's TeacherBen's DogThe Seer
Dimension 23 Ben TennysonTetrax ShardSevenSevenAzmuth
No Watch Timeline Ben TennysonGwen TennysonMax TennysonKevin LevinJ.T.
Argitrix Timeline Argit
Mad Ben's Dimension Mad HarangueMad Rook
Books Alien's ActorBen's ActorBig Chill's ActorChromastone's ActorEcho Echo's ActorGladiatorGoop's ActorGuardHumungousaur's ActorIlma NarJetray's ActorLittle GirlLorelaiPlen StroffPresidentPrisoner From the Planet DustovRobotic BullSoolSkraprr ByakkoSpidermonkey's ActorSwampfire's ActorTimothyTini Rau
Generator Rex Rex SalazarRebecca HolidayBobo HahaAgent SixCaesar SalazarDiane FarrahWhite KnightDinosaur EVO
Secret Saturdays Zak SaturdayDoc SaturdayDrew SaturdayFiskerton SaturdayKomodoZon
MAD Benjamin Franklin
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Unitrix Omnitrix (Original) Ultimatrix Omnitrix
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Omnitrix (Ben 10,000) Biomnitrix Nemetrix Ultimatrix (Recreated)
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Omnitrix (Replica) Hero Watch Power Watch Zombitrix
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Negatrix Omnitrix (Gweniverse) Argitrix