- " My cannon arm will rip off your ugly face."
- ―Cannon Arm
At some unknown point in his life, Cannon Arm became a member of the Crew of the Flying Dutchman under Captain Davy Jones. Cannon Arm was unique among his fellow crewmen, mostly coming from the fact that he was one of the extremely few who had merged with a weapon over the course of his aquatic transformation. His entire body was covered with seaweed and barnacles, and his left arm had biologically fused with a mini-cannon, thus earning his nickname. Cannon Arm was one of Davy Jones' three elite crewmen, besides Quartermaster and Electric Arm.
Cannon Arm often distinguished himself in combat by sometimes putting grenades into his mini-cannon and firing them off without the use of a flint or powder, giving him an advantage over his enemies. Appropriately, he was in charge of the triple guns and was known to love his work. During the Battle of Calypso's maelstrom, Cannon Arm fought Elizabeth Swann aboard the Flying Dutchman. He would be reverted back to his human form when William Turner became captain of the Dutchman. His final fate remains unknown.
- Pirates of the Caribbean: At World's End (video game) (PS2, WII, PC, PSP version)