Pin Joker acts as a primary lieutenant for the Trump Pirates under Bear King's command on Clockwork Island, identified by a distinct kiwi bird motif. He nurses a fierce personal vendetta against Roronoa Zoro due to a scar Zoro inflicted on his face during a prior encounter, though Zoro shows no memory of their history and dismisses Pin Joker's claims.
His speech features frequent malapropisms and consistently mangles common idioms, often drawing corrections during conversations. In combat, he relies on specialized poisoned darts coated with traces of Skunk One's incapacitating "devil-gas," a toxin causing progressive paralysis upon contact.
During the assault on Trump Castle, Pin Joker exploits a moment when Luffy and Zoro are immobilized by a mechanical pressure trap, launching a concentrated barrage of his poisoned darts. Zoro deliberately intercepts the projectiles to shield Luffy, resulting in his own paralysis and capture.
Pin Joker is ultimately defeated when Zoro, surviving the poisoning, deflects Pin Joker's darts back at him during their rematch. This significantly weakens Pin Joker, leaving him vulnerable to a decisive counterattack that removes him from the conflict. He does not reappear afterward.
His role contributes to the sequential capture of the Straw Hat crew, forming part of the "Dwindling Party" structure as protagonists are systematically neutralized during the castle infiltration. His actions occur exclusively within this specific film narrative.