Jordan Hill was the only child of Hamilton Hill. Jordan had a strained relationship with his father which became worse when he threw Jordan a birthday party. The party was not not truley for him but for Mayor Hill's political acquaintances. After seeing Jekko the Clown (who was really the Joker) Jordan snuck into his van and ran away with him. The Joker later revealed his identity to Jordan and used him as bait for Batman. The Dark Knight was able to rescue him and bring him back to his father, after that their bond became stronger than ever.