Marty was a dwarf pirate who lived in Tortuga. In The Curse of the Black Pearl, he is hired by Joshamee Gibbs and Jack Sparrow as apart of the crew to reclaim the Black Pearl. During the attack between the Black Pearl and the HMS Interceptor, he uses Gibbs' rum flask as a cannon projectile. After Elizabeth Swann frees the crew from the Pearl's brig, he and the crew escape Isla de Muerta with the Pearl. They later rescue Jack from Port Royal. In Dead Man's Chest, Marty is among the few surviving crew members when they escape the Cannibals of Pelegosto. When the Kraken attacks the Black Pearl, he is among the surviving crew, and they later agree to go rescue Sparrow. In At World's End, he joins Captain Hector Barbossa in the plan to rescue Jack from Davy Jones' Locker. He fights in Calypso's Maelstrom agains the East India Trading Company and Davy Jones. He remains a crew member of the Pearl after Barbossa mutinies against Jack again.