Tim J. is a character in the Lost novelization Endangered Species. He was a security guard for Dr. Luis Arreglo in Sydney, Australia. He allowed Faith and Oscar to enter Dr. Arreglo's room as she had been invited to see him. He insisted on searching Oscar, but found nothing. Dr. Arreglo was later murdered by Oscar after he stabbed him in the chest with syringe filled with venom. The syringe was hidden in Faith's jacket pocket, which unbeknownst to her, Oscar had put in there because he knew the guard wouldn't check her.