Goop is one of Ben Tennyson's alter-egos introduced in Ben 10: Alien Force. He is the Omnitrix/Ultimatrix's DNA sample of a Polymorph from the planet Viscosia.
Goop is a slimy single-cell organism that take various shapes. His usually appearance is a humanoid shape with pure green eyes and no visible mouth or nose. He has a small spike on his left shoulder and a long spike on his right shoulder, He has three fingers and a thumb on ease hand, and has two blobby feet, and wears the Omnitrix/Ultimatrix symbol on his chest. Floating above his head is a small UFO-like device which a Anti-Gravity Projector which helps stabilize his form due to his species having gravity weaker on Viscosia than most planets.
In Omniverse, Goop has a more amoeba-like appearance with a beak-like nose, and has spikes on his shoulders and elbows. His Omnitrix symbol is now on top of his Anti-Gravity Projector rather than his chest.
Powers and Abilities
Goop has the power to manipulate his substance to any way he sees fit and morph into various shapes, even mimic the shape of a object. Goop also has the power use his form as a corrosive acid which is capable of melting anything it comes in contact with. Goop can also manipulate his form in order to fit into very small places or areas such as a faucet. He can also use his substance to act as a slippery gel that can be used to trip his enemies or make his entire body stick onto walls. Goop can project sticky smile to blind his opponents. Goop can move his eyes around his body similar to Ghostfreak. Goop can survive in the vacuum of space for short period of time. The Anti-Gravity Projector grants Goop the ability to levitate and fly at high-speeds to evade incoming attacks, Goop's strength is also increased to point he can destroy a Techadon robot from the inside and and effortlessly restrains Magister Prior Gilhil and render the latter powerless.
Goop's biggest weakness is his Anti-Gravity disk, if turned off or destroyed, Goop will lose the ability to maintain his form and will be unable to move as well as being reduced to a slimy puddle and completely immobilized. Despite not able to feel pain, Goop can still be harmed if he is spun really fast in a centrifuge. Goop cannot regenerate himself if he is attacked continuously. Goop can be blown away by a Geochelone Aerio's aerokinesis.
Ben 10: Alien Force
Goop first appeared in The Gauntlet, where he destroyed a Techadon Robot, and accidentally showering Gwen and Kevin with his slime
In Darkstar Rising, Goop overpowers Magister Prior Gilhil by trapping him with his slime
In Good Copy, Bad Copy, Goop was first used by Albedo to hid from Ben's team in a computer store and scared many customers away in the process. Later, Ben used Goop attacks Albedo, whom transform Negative Humungousaur and defeated Goop, so Goop switches into Swampfire.
In Undercover, Goop steaks into Cooper's room, and saved him from two DNAliens.
In Birds of a Feather, Goop found Simian stealing pieces of scientific equipment from a cryogenics laboratory, and help him escape from the guards.
In Fool's Gold, Goop subdued and defeated Mayor Coleman.
In Simple, Goop was used to avoid getting smack after being pushed off a cliff by the red and blue leaders.
In Vreedle, Vreedle, Goop fought the Vreedle Brothers, even clopping Rhomboid's gun with his slime.
In Singlehanded, Diamondhead turned into Goop to save himself from a bridge collapse while Julie was using his hand as a weapon, disgusting her.
In In Charm's Way, Goop incapacitated a stone creature with his acidic body until it was sucked into a magic vortex.
In Above and Beyond, Goop defeated Pierce while pretending to be evil.
Ben 10: Ultimate Alien
In Andreas' Fault, Goop broke out of a dungeon cell and knocked out a Forever Knight guard.
In Hero Time, Goop save Julie from falling and then join Gwen and Kevin to battle Nemesis, after Gwen and Kevin realize that Nemesis' armor was getting hotter every time he uses it, Goop tries to reason with Nemesis to deactivate his armor, so they can talk about everything they started easier. but when Nemesis snaps and renames himself "Overload", Nemesis fires another energy blasts at them, but they hid behind Gwen's Mana force-fields. Goop decides transform into Big Chill to cool down Nemesis' armor before it explodes and kills himself, but he transformed into Water Hazard instead, though he successfully save Nemesis.
In Deep, Goop attempts to escape from some fans, but they grab his Anti-Gravity Projector causing him to collapse into a puddle and leaving him incapacitated. Gwen and Kevin arrive and rescue Goop from being surrounded by fans. Later, Goop uses his Anti-Gravity Projector as substitute to stop the the planet Piscciss from shattering into pieces. Unfortunately, Goop became atomized and spread throughout the entire planet. However, Goop, now fused with the ocean and pull Piscciss back together, thus saving the planet from destruction.
In ...Nor Iron Bars a Cage, Goop escape from a prison cell and used his acidic touch to unlock the door to let Gwen out. This episode shows that if Goop lose his Anti-Gravity Projector, the Ultimatrix can immediately recreate a new one.
In Revenge of the Swarm, Goop fought a Victor Validus clone until it escaped into a sewer and left a Nanochip behind, which Goop discovered.
In The Creature from Beyond, Goop saved Gwen and Kevin from falling to their deaths.
In Ben 10,000 Returns, Goop battled some of Eon's servants.
In Greetings from Techadon, Goop tries destroyed a yellow Techadon Robot, but the robot proves to be too powerful for Goop to fight, unlike the first Techadon he destroyed during debut
In The Perfect Girlfriend, Goop went inside a warehouse, but the door were locked and his Anti-Gravity Project get through, leaving him helpless when he was trapped and tortured in a large centrifugal machine activated by Ssserpent until "Julie" saved him.
In Catch a Falling Star, Goop broke into Carl Nesmith and Jennifer Nocturne's motel room.
In Night of the Living Nightmare, Goop battled Vilgax before switching into Spidermonkey offscreen in a dream.
In The Beginning of the End, Goop defeated a group of Forever Knights on the Rust Bucket 3.
Ben 10: Omniverse
In Blukic and Driba Go to Mr. Smoothy's, Goop battled Trumbipulor and saved Blukic and Driba from being devoured by him before switching into Echo Echo.
In Ben Again, Goop was used by 11-year-old Ben in 16-year-old Ben's body to find a clue in a sink pipe.
In A Fistful of Brains, Goop was defeated by Ultimate Albedo.
In It's a Mad, Mad, Mad Ben World: Part 1, Goop defeated Exo-Skull, but was destabilized by Subdora. Fortunately, though, Goop's remains unintentionally created a means to track them down.