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34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity

Liam is a small-time criminal in Undertown.


Liam's appearance is very chicken-like, having feathers and a beak. He also wears silver armguards and two bandoleers connecting together on his chest. His upper half is beige, the lower half is brown, he has orange feet-like hands and sticking out of his head on the top as well as his bottom are red feathers.

When he was a Vaxasaurian hybrid, Liam looked similar to Humungousaur, only he still had the feathers on his head and his eyes were unchanged. He also had the bandoleers and armguards he was wearing before.


As a henchmen and hired thug, he appears as a brute, willing to solve most his problems with violence. He displays some bird-like characteristics such as clucking, crowing and a love of birdseed.



In The More Things Change: Part 1, Liam debuted alongside Bubble Helmet and Fistina.

In The More Things Change: Part 2, Liam fought with Ben and Rook on train tracks in Undertown.

In Outbreak, Liam had become a Vaxasaurian/his species hybrid for the duration of the episode as a result of a malfunction with the Omnitrix. After being returned to normal, he inadvertently unlocked Kickin Hawk by touching the Omnitrix, and was promptly beaten by that form.

In Store 23, Liam was seen stealing Vaxasaurian eggs while Max and Ben were chasing after him for them in Undertown, he was eventually stopped by Feedback.

At some point prior to Special Delivery, Liam probably told Thunderpig that Ben ate his father.[DJW 1]

In No Honor Among Bros, Liam was defeated by Fistina at the Golden Fist Tournament.

In Clyde Five, Liam buys a Mark 5 Nanoshift Enabled Exo-Armor from Inspector 13 and uses it to rob Sock Vendor. He quickly loses it and it is found by Ben's cousin, Clyde. In the Black Hole, he calls Inspector 13 who informs him that the model he bought was the only one available. He rents three Techadon robots for 250 Taydens and asks Thunderpig to help him getting the weapon back. When he and Thunderpig faced Clyde, Ben and Rook, Clyde used a technique on Liam that made him fall asleep. Thunderpig thinks that Clyde is a wizard and saves his "feathered friend". Liam calls Inspector 13 again, who now sells him a remote control for the weapon. He uses Clyde's armor to destroy Ben and Bellwood. However, Ben as Feedback senses the radio waves and he gets unveiled. At the end of the episode, he gets rubbed to sleep by Clyde again.

In Breakpoint, Liam is part of Fistrick's gang, who pull heists while wearing ID Masks to take on the appearance of Ben Tennyson. The real Ben infiltrates their gang as Wildvine, and they are ultimately defeated and captured.

In The Color of Monkey, he and Suemungousaur attempt to mug an Undertown citizen, but are interrupted by Ben and Rook. In the middle of the battle, Techadon robots under the command of Argit arrive, and apprehend both Liam and Suemungousaur.

In Stuck on You, Liam is in the Black Hole. When Skurd starts jumping from host to host, he lands on Liam, feeding on his DNA and sprouting an arm identical to his own. As Liam tries to get Skurd off, Skurd punches him repeatedly with the new arm. Once Liam falls unconscious, Skurd jumps off him.

Powers and Abilities[]

The More Things Change, Part 1 (406)

Liam extracting spurs from his elbows

Liam has shown the ability to extract spurs from his elbows. He has enhanced strength and agility.


Liam is easily distracted, even from battle, by bird seed, making him an easy target.[1]

If someone rubs his neck, Liam will collapse and fall asleep.[2]

Liam is vulnerable to electricity.[3]

Liam is also vulnerable to energy based attacks, such as those of a Pugnavore, as demonstrated by Kickin Hawk.[4]



Season 1[]

Season 2[]

Season 3[]

Season 4[]

Season 6[]

Season 7[]

Season 8[]


Ben 10: Omniverse[]


  • Liam tends to make chicken noises when he fights, talks or eats food, similar to how Kickin Hawk makes bird sounds.


  • It is unclear as to how Kickin Hawk was unlocked. Despite having acquired the transformation through a DNA scan,[3] it is implied that Kickin Hawk was never locked in the Omnitrix.[DJW 2]


Derrick J. Wyatt[]

Prime Timeline
Vilgax Bioid (Original)Bioid (Omnitrix Army)MechadroidSquid MonsterUltimate Vilgax
Dr. Animo Mutant FrogMutant HamsterMutant ParrotLiving MammothLiving TyrannosaurusHeatbatMutant Seagull (Original Series)Mutant OctopusMutant Lepidopterran/Splixson HybridMutant BatMutant Prairie DogMutant HornetPterodactylPterodactyl LeaderMutant KangarooMutant SnailMutant AntMutant MosquitoMutant GiraffeTechnobugChupacabraFrankencryptidMutant Squirrel
Bounty Hunters SixSixSevenSevenEightEightSynthroidSunderKraabVulkanus
Zombozo Acid BreathFrightwigThumbskullZombie Clowns
Rojo's Gang RojoAzulAmarillo
Magic AddwaityaCharmcasterDarkstarPallorfangScrutin
Forever Knights Sir DriscollEnochPatrickUrienSir CyrusJoseph ChadwickConnorSir DagonetDr. JekyllSir MortonSir ReginaldTwin KnightsSquireCoach FinnMech DragonRed KnightSquires
Great One Enforcer AlienInterpreter AlienLeader Alien
Zs'Skayr CrüjoKuphuluLord TransylMummyViktorWerewolfAnur-Mirrored BenAnur-Mirrored CharmcasterAnur-Mirrored HobbleAnur-Mirrored RookLiving Pumpkins
Vengers Billy BillionsCaptain NemesisKangaroo KommandoMazumaSimonsWill Harangue
Lenopan Mr. MannMrs. MannCamille's Ex-BoyfriendMann Family's Bodyguard
Road Crew Baron HighwayTurbineRoad Rage
Evil Bens EonAlbedoBad BenBenzarroEon's ServantsMad BenNega Ben
Highbreed Highbreed CommanderDNAlienEdnaMoeShemMizaruXenocite
Incursean Empire MilleousAtteaRaffMajor GlorffLieutenant RanaSangfroidWay Bads
Vreedles MaPaOctagonRhomboidParallelogramIsosceles Right TriangleDodecahedronPretty Boy
The Hive Elena ValadisMicrochipDecoy QueenLiving BuildingsShip-It Employee
Aggregor AggrebotsUltimate Aggregor
Dagon LucubraConduit EdwardsRichEsoterica
Faction Dr. PsychobosKhyberKhyber's PanuncianMalware
Psyphon Bug-LiteBouncerBubble HelmetLiamGorvanPsyphon's MinionNightmarish AlienPiscciss Volann PrisonerPickaxe AliensSweet-Eels SparklefunkHooded AlienThunderpigTummyhead
Fistrick CorvoHoodlumFistrick's Thug
Rooters ServantisPhil BillingsRagnarokSwiftLeander
Robots B.L.R.R.T.S.A.M.Slix VigmaSlix Vigma's BodyguardsRed RobotComputronComputron's MinionsOttoTechadon RobotsMechaneerNaljian DestructorR.E.D.sMouse MinionsStalkerRemoteJungle Guardians
Others AntonioBenevelonBlue LeaderBuzzCharles ZenithClancyCodon Stream MonsterConvictMayor ColemanCollectimusLord DoomicusDuaneFrankPrince GyulaHammerHowell WainwrightHulex ColonelHulex WorkersInspector 13JackJarettJonah MelvilleKolarCaptain KorkKrakkenKundoLepidopterran PrisonerLiving MushroomsMaltruantMino-TogaMissyMorggMutant SeagullsMyceliumNyancy ChanPiscciss KrakenPinkyPlant AlienPlant ClonesPoltroonPrisoner 775Red LeaderSeebikSimianSolid PluggSsserpentSubliminoSuemungousaurSunnySurgeonTetramand PrisonerTrash MonsterTrombipulorViolet OffendersKing XarionYetta
Alternate Dimensions/Timelines
Original Future Timeline Dr. AnimoExo-SkullKevin LevinMot SnikrepSplootVilgaxVulkanus
Omniverse Future Timeline Dr. AnimoExo-SkullSubdora
Time Heals Timeline CharmcasterHex
Dimension 23 Carrot MonsterOrange Offenders
Mad Ben's Dimension Mad Pakmar
Gwen 10 (What-If?) Vilgax
Goodbye and Good Riddance (What-If?) VilgaxBird Villains
Books AnimusAztakCaeciliaDJ ZenutDr. DoomFrostbyteGontuGroombahInfinite MonkeyLouie the HairdresserParasiteScornSeñor ChaosSlezakThe Collector (Collectible Heroes)The Collector (Powerless)Trash Monster (Down in the Dumps)Triple Trouble
Games Crystal ClawsFeralineForever NinjaFusion BenGiant Vilgax DestroyerMacerootRemoteSnakeflySnap DragonTerracotta ArmyTerracotta GeneralTerracotta DragonThornhoundVulpin Serpent
Non-Ben 10
Generator Rex AlphaBlack KnightBiowulfI-BolSkalamander
The Secret Saturdays V.V. ArgostMunya