Kraab is one of three alien bounty hunters sent to take the Omnitrix from Ben. He has gold-colored armor, a sideways mouth, four scythe-like legs, and a large, powerful pincer on his left hand. Within the pincer is a power blaster combined with a chemical sprayer. He can also use his legs to burrow under the ground and travel quickly from place to place. Over 95% of his body is made up of mechanical parts, which is a result of war injuries.

Kraab is an experienced bounty hunter and is smart enough to know of a chemical spray that takes away Ghostfreak's power to become intangible. It should also be noted that Kraab talks like an actual hunter, calling Ben his "prey", and saying that he is "hardly worth the hunt". However, Kraab is more robotic than organic, meaning Ben, as Grey Matter can easily deactivate him. Kraab appears in the episode "Hunted".

Kraab is a Pisccis Premann from the planet Piscciss. He or at least his species will likely appear in Ben 10: Alien Force as they are in the Cartoon Network Game Creator.

Kraab's First Appearance
Hunted

Kraab's Last Appearance
Unknown