Giant Crab

The Giant Crab was a giant crab Percy met on the Princess Andromeda. He stabbed its belly to kill it where there was a chink in its armor, as with all crabs. Its original form might be the constellation Cancer.

History
In mythology the Cancer came to the Hydra's aid sent by Hera, it was defeated and kicked into the stars by Hercules with him only using his bare hands.

Appearance
The Giant Crab was bigger than a large water fountain, well over 3 meters tall, it's shell was mottled blue and green. It had pincers longer than Percy's body, and black eyes full of intelligence and hate. It had a terrible smell, not dissimilar to that of garbage. It constantly foamed at the mouth, or at least it did when Percy encountered it.

The Last Olympian
While Percy went onboard the Princess Andromeda with Beckendorf on their mission to blow up the ship, Percy had to distract the monsters on board. Percy met the giant crab on the fountain in the middle of the courtyard, in the promenade. Fighting it, Percy defeated the Giant Crab by making the ground slick with water, and then sliding underneath him to stab the Crab in the belly, its weak spot. The crab dissolved, leaving behind its empty shell.

Powers/Abilities

 * Hard, powerful pincers longer than a man's body
 * Amazing speed
 * Near impenetrable shell