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Kraab is a cybernetically-enhanced Piscciss Premann and was one of three alien bounty hunters sent by Vilgax to retrieve the Omnitrix from Ben Tennyson.


In the original series, Kraab resembled a fiddler crab with a goldish brown-colored armor, a sideways mouth, four scythe-like legs and a large, powerful pincer for a left hand. Within the pincer was a power blaster combined with a chemical sprayer. When he goes underground by spinning his legs, he retracts his head down, making his neck disappear. He had orange lines running over his body and his eyes had the same color as the highlights of his pincer.

In Alien Force, Kraab looked almost the same but had a copper and orange colorization except on his legs, where the brown part became black. His eyes were also brighter.

In Omniverse, his design is slightly different. The lower abdomen is larger and more spherical, and his claw arm now has a bolt and his shoulders are fully covered by armor plating. He maintains the red and orange color but with a paler tone. The lower parts of his legs end in a larger and sharper knee cap of sorts, and the lines on his body are brighter and narrower.


Kraab is a violent bounty hunter who talks like an actual hunter, calling Ben his "prey", and saying that he is "hardly worth the hunt". He also has an arrogant sense of humor.



Kraab is a veteran of the Pyros-Piscciss war, during which he suffered severe injuries, resulting in him having mechanical parts implanted in his damaged body. 95% of his body is now mechanical and 5% is Piscciss Premann.[pop-up 1][1]

Ben 10

Kraab was one of the three bounty hunters hired by Vilgax to hunt down the Omnitrix in Hunted, the others being SixSix and Tetrax. He defeated Ghostfreak but was defeated when Grey Matter ripped out some wires from his neck, causing his body to go haywire.

Alien Force

Kraab reappeared in The Final Battle: Part 1, hired by an unknown client to hunt down Ben. He was frozen by Big Chill and left aboard the ship. Since Ben couldn't save the ship, it exploded, but Gwen and Kevin managed to save Kraab.


Kraab returns in Cough It Up, when Psyphon hires bounty hunters to find him a very precious item. He was first seen on the streets of Undertown, searching for it. Jimmy Jones chased him to the entrance of the Black Hole. Psyphon told the hunters that the item was stolen by someone who poisoned the guards with quills.

Kraab detonated one of Argit's office's walls and told Argit to give him the item. Argit was surprised to see him because he thought he was still in jail. Unfortunately for Kraab, Ben, Rook, and Spanner happened to be there too. Ben transformed into Frankenstrike and took out Kraab with one hit. Along with the other bounty hunters, Kraab was defeated by Argit's Techadon robots and banned from Undertown.

Powers and Abilities

As a skilled hunter and being mostly cybernetic, Kraab is armed to the teeth with state-of-the-art weapons, giving him the opportunity to land a blow on his target. His main weapon is his big powerful claw, which can fire lasers, electric blasts, and chemical compounds.

Kraab can spray an orange chemical capable of neutralizing an Ectonurite's intangibility.[1]

Kraab possess enhanced strength and durability.

Kraab possesses thermographic vision, and is capable of turning his head around 360 degrees.[1]

Kraab can burrow underground easily by retracting his head downwards into his neck and spinning his lower body like a mining drill.[1]

Kraab can understand the Sotoraggian language.[1]


Kraab is more robotic than organic, meaning that a Galvan can interfere with his systems, causing him to lose control of himself and deactivate.[1]

Kraab can be immobilized by a Necrofriggian's ice breath.[2]

Kraab's lasers can be rendered ineffective against a species capable of becoming intangible, such as Ectonurites[1] and Necrofriggians.[2]

Kraab is vulnerable to electricity, such a Transylian's attacks.[3]

Kraab can be affected by a Nemuina's sleeping dust.[DJW 1]

Kraab can be controlled by Vladats via their Corrupturas.[DJW 1]


Ben 10

Season 1

Alien Force

Season 3


Season 6


Cartoon Network Action Packs


  • Will Jarrett Have His Revenge?

Video Games

Kraab in Cosmic Destruction

Kraab appears in Ben 10 Ultimate Alien: Cosmic Destruction as a mini-boss.


His name is based on "crab".



Crew Statements

Derrick J. Wyatt

Dave Johnson

Dwayne McDuffie


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