Upchuck is the Omnitrix's DNA samples of the Perk and Murk races of Gourmand from the destroyed planet Peptos XI and currently Peptos XII.


Ben as Perk Upchuck

Perk Upchuck has green skin, six sprout-like growths on the back of his head, a dark-green patch of skin on his head, light-green skin on his face and belly and a crooked teeth overbite. He has whisker like lines on his face, and a green tail.

In the original series, Perk Upchuck had white eyes and wore a black open-front suit with white over-sleeves and white bands around his legs and white padding under his three-toed feet. He wore the original Omnitrix symbol on his left hand.

In Omniverse, 16-year-old Perk Upchuck does not wear clothes and his eyes are recolored green. He wears the Omnitrix on his stomach.

11-year-old Perk Upchuck looks almost the same as the original series, but his eyes and original Omnitrix symbol are recolored green and he now has bare feet with short claws.

Ben as Murk Upchuck

Murk Upchuck has swampy-green skin, a tanned stomach and muzzles, black sprouts and black-green spots on his tail, limbs, and back. His eyes are sharp and green, he has whisker-like lines, his teeth are more aligned with visibly sharp canine teeth and his tail is short and straightened, as opposed to Perk Upchuck's curled tail.

In Heroes United, Murk Upchuck's black stripes on his face were longer, reaching his mouth, and he only had two lines instead of three. His claws were attached to his hands through finger stubs.

In Omniverse, Murk Upchuck resembles his previous design, except that his claws are longer and bigger, his sprouts are brighter, and he has less spots on his body. He now has only two teeth in the shape of an underbite, and the markings on his face are thinner and contained by the face, no longer spanning the head. Murk Upchuck wears the original Omnitrix/Ultimatrix/Omnitrix symbol on his stomach.


Perk Upchuck

Ben 10

Perk Upchuck first appeared in The Visitor, where he was unlocked by Xylene and defeated the Mechadroid.

In Ben 10: Secret of the Omnitrix, Perk Upchuck was defeated by Myaxx.

In Ben 4 Good Buddy, Perk Upchuck battled the Road Crew and was defeated by Turbine.

In Ben 10 vs. the Negative 10: Part 2, Perk Upchuck defeated the Forever Ninja and Driscoll and accidentally destroyed Mt. Rushmore in the process.

Ben 10: Omniverse (Backstory)

In Evil's Encore, Perk Upchuck stopped Dr. Animo's control of the Plumber Base and accidentally destroyed Mt. Rushmore in the process for the second time in a row.

In From Hedorium to Eternity, Perk Upchuck accidentally broke one of Mr. Baumann's car windows.

Ben 10: Omniverse

In Tummy Trouble, Upchuck appeared four times. First, Perk Upchuck defeated Nyancy Chan's tigers. Later, both Upchucks helped settle peace negotiations between the Perk and Murk Gourmands. Lastly, Perk Upchuck helped eat Peptos XI with the other Gourmands.

In A Fistful of Brains, Perk Upchuck was defeated by Ultimate Albedo.

In For a Few Brains More, Perk Upchuck ate Crabdozer before spitting out Ultimate Panuncian.

In The Rooters of All Evil, Perk Upchuck fought the Rooters.

In No Honor Among Bros, Perk Upchuck defeated Rook at the Golden Fist Tournament.

In Universe vs. Tennyson, Perk Upchuck defeated Thunderpig.

In A New Dawn, Perk Upchuck appeared for a short time when Ben was cycling through his aliens.

Murk Upchuck

Ben 10: Alien Force

Murk Upchuck first appeared in War of the Worlds: Part 1, ​where he was unlocked by the Master Control. Murk Upchuck battled an army of DNAliens and unsuccessfully attempted to destroy the Hyperspace Jump Gate alongside his teammates before switching into Way Big.

In Vengeance of Vilgax: Part 2, Murk Upchuck fought and captured the escaped Chromastone.

In In Charm's Way, Murk Upchuck defeated Charmcaster's giant animated Mr. Smoothy.

Ben 10: Ultimate Alien

In Duped, Arrogant Ben used Murk Upchuck to battle Urien, but was defeated.

In The Purge, Murk Upchuck was defeated by the Forever Knights.

In Ben 10-Generator Rex: Heroes United, Murk Upchuck ate the Alpha Nanite's container to transport it out of Rex's dimension.

In Inspector 13, Gwen as Murk Upchuck helped rescue Ben.

Ben 10: Omniverse

In Tummy Trouble, Upchuck appeared four times. First, Perk Upchuck defeated Nyancy Chan's tigers. Later, both Upchucks helped settle peace negotiations between the Perk and Murk Gourmands. Lastly, Perk Upchuck helped eat Peptos XI with the other Gourmands.

In Store 23, Murk Upchuck was one of several aliens Ben Prime was showcasing for Ben 23.

Powers and Abilities

Both Upchucks have three very strong, adhesive tongues that can stretch to great lengths, allowing them to latch onto large objects and reel them in with relative ease. They can eat virtually any object or matter all the way up to Ascalon.

Besides objects and matter, both Upchucks can eat other beings such as tigers, Crabdozers, To'kustars, and even Celestialsapiens.

In the case of To'kustars, they would first have to be chopped up into bite-size chunks. In the case of Celestialsapiens, they would either be digested or spat back out.

Both Upchucks' mouths can stretch, allowing them to swallow objects larger than themselves. They are connected with a trans-space bladder dimension where they store all the "food" they eat. Both Upchucks are connected to the Gourmand species and can sense any danger to their people through their stomachs.

By breathing air out of their mouths, both Upchucks are able to fly and even survive in the vacuum of space, as demonstrated by various Gourmands.

The items ingested by either Upchuck are converted into explosive balls of liquids that can be expelled with great accuracy. The explosive power of these "loogies" depends on the chemical composition and overall size of what Upchuck ate to create them.

Both Upchucks can carry heavy objects in their stomach, such as the Alpha Nanite's container, and release them without having to turn them into a "loogie".

Both Upchucks can eat and spit out energy, such as lasers and a Crystalsapien's ultraviolet beams, in the same way they eat and spit out acid matter.

Both Upchucks can make their "loogies" curve like a boomerang, shuriken, or frisbee. They can also fire powerful streams of their explosive vomit like an energy beam by building up digested matter and releasing it all at once.

Either Upchuck is able to take a surprising amount of punishment for a creature of their size, taking the force of a moving car impact, as well as surviving after being thrown through a wall.

Both Upchucks can spit out slime, which can be slippery for Arburian Pelarotas. This slime is also capable of melting ice.


Both Upchucks have a limit to how many big objects they can swallow at once. They also become slow and excessively when they eat a lot of things. Otherwise, they are somewhat quick, considering their small size.

If either Upchuck does not spit out something they eat, they will get very fat and rendered immobile until they spit it out.

There is a limit to the kinds of energy either Upchuck can ingest, as the energy beams of an Evolved Galvan made them inflate into a ball.

Either Upchuck can be temporarily immobilized by a Necrofriggian's ice breath until they thaw themselves free using their slime.

Despite being able to eat a Celestialsapien, neither Upchuck can gain the latter's powers in any form or way.



  • Upchuck does not have a natural predator because his species is at the top of the food chain.


           Ben 10 logo.png Heroes

Main Heroes
Ben Tennyson | Gwen Tennyson | Max Tennyson | Kevin Levin | Rook Blonko

Azmuth | Professor Paradox | Cooper Daniels | Manny Armstrong | Alan Albright | Helen Wheels | Pierce Wheels | Ester

Original Series Aliens
Heatblast | Four Arms | Diamondhead | Ripjaws | Upgrade | Ghostfreak | Stinkfly | Grey Matter | Wildmutt (Ultimate Wildmutt) | Cannonbolt (Ultimate Cannonbolt) | Wildvine | Upchuck | XLR8 | Ditto | Blitzwolfer | Snare-oh | Frankenstrike | Eye Guy | Way Big (Ultimate Way Big) | Spitter

Alien Force/Ultimate Alien Aliens
Swampfire (Ultimate Swampfire) | Humungousaur (Ultimate Humungousaur) | Spidermonkey (Ultimate Spidermonkey) | Echo Echo (Ultimate Echo Echo) | Big Chill (Ultimate Big Chill) | Chromastone | Brainstorm | Goop | Jetray | Alien X | Lodestar | Clockwork | Rath | Jury Rigg | Nanomech | Water Hazard | AmpFibian | Armodrillo | NRG | Terraspin | Fasttrack | Eatle | ChamAlien | Shocksquatch

Omniverse Aliens
Feedback | Gravattack | Bloxx | Kickin Hawk | The Worst | Gutrot | Atomix | Astrodactyl | Ball Weevil | Bullfrag | Crashhopper | Pesky Dust | Walkatrout | Mole-Stache | Toepick | Buzzshock | Arctiguana | Whampire

Reboot Series
Ben Tennyson | Gwen Tennyson | Max Tennyson | Kevin Levin

Reboot Series Aliens
Heatblast | Diamondhead | Four Arms | Grey Matter | XLR8 | Wildvine | Cannonbolt | Upgrade | Stinkfly | Rath | Humungousaur | Overflow | Gax | Shock Rock | Slapback | Jetray | Way Big | Goop

Fusion Aliens
Atomic-X | Amalgam Ben | Big Chuck | Crashocker | Diamond Matter | Fourmungousaur | Heat Jaws | Humungoopsaur | Stink Arms | Uprigg | XLRArmBlastDiamondHeat

Other Aliens
Bashmouth | Bootleg | Crystalfist | Dark Matter | Freezelizard | Hot Shot | Humungoraptor | Quad Smack | Rollaway | Rush | Skunkmoth | Techno-Bubble | Thornblade | Toolboxx | Undertow | Wreckingbolt

Other Omnitrix Users
Ben 23 | No Watch Ben | Gwen 10

Other Characters
Spellbinder | Tetrax Shard | Sir George | Driba | Blukic | Lucy Mann | Charmcaster | Luhley | Myaxx | Julie Yamamoto | Kai Green | Jimmy Jones | Ken Tennyson | Clyde Fife | Fistina | Reinrassic III | Kwarrel | Skurd | Devlin Levin | Zed | Baz-El | Ship

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