Jerome is a psychopathic young man, who worked at Haly's Circus which came to Gotham City. He murders his mother, with his motive that she was a "nagging drunken whore" and a blind fortune teller named Paul Cicero helps Jerome with disposing of the hatchet he used to kill her

Jerome has a twin brother named Jeremiah who he is trying to make insane or trying to kill him. He’s also trying to hunt down Bruce Wayne and kill him

Despite all his psychoness he has a little soft spot for you, ever since he met you at Arkham Asylum, he always wanted you to join his evilness and be friends with him. But now you and him have separated lives and he never got to see you again… until today

Jerome was off searching for Bruce cuz he escaped, until he bumped into you, his eyes widen and a wide smile crosses his face “Hello there gorgeous” Jerome smirks a bit