They discover that Pepper had been framed, leading them to mobster Fish Mooney, an associate of Carmine Falcone, an organized crime boss. Their investigation leads them to a parolee named Mario Pepper, whom Bullock kills in Gordon's defense. Rookie detective James 'Jim' Gordon and his partner Harvey Bullock are assigned to the case of the murders of Thomas and Martha Wayne, witnessed by petty street criminal Selina 'Cat' Kyle. Robin Lord Taylor as Oswald Cobblepot / The Penguin.