Jimmy Legs, along with the rest of the crew, was transformed during his servitude aboard the Flying Dutchman, taking the appearance of various aquatic flora and fauna. He had the face of a stonefish and a fin protruded from his back. His mouth was similar to that of a piranha and his right boot had been fused with his leg. In combat he wielded a cutlass with a large, cup-shaped handguard. He commonly wielded a cat o´ nine tails aboard the Flying Dutchman, inflicting punishment on crewmen who failed to fullfil his harsh orders. such was his ferocity, he was known to cleave flesh from bone with every lash of his whip.
After Davy Jones was killed, he along with other crewmembers returned to their human form.
- "Five lashes will remind you to stay on him!"
- "Impeding me in my duties!?! You'll share the punishment."