Jerry (Guard)

Jerry was a guard at Arkham Asylum during the events of Batman Arkham Asylum. He was only seen unconscious in Intensive Treatment. His fellow guard said he had dragged jerry in the security room,powered up the gate, and passed out but woke up by the time Batman had arrived.

Before Arkham Asylum
When the Arkham Asylum was reopened by Quincy Sharp he hired Jerry. Jerry started working there as a security guard and got friend with another guard.

Arkham Asylum Incident
Jerry was on duty when the Joker was brought back to Arkham Asylum after the Joker escaped custody. He was patrolling Intensive treatment area with other guards the Joker knocked him out and killed the the other guards one of the guards survived the encounter and dragged jerry to a nearby guard station and unlock the security gate from prevent to be noticed. After Batman defeated the Titan Henchman. His friend unlock the gate and when Batman asked about Jerry he said that he should be fine.

After Arkham Asylum Incident
Jerry and his friend must have survived the attack on Arkham because after the Batman is leaves he locks the way of the guard post station and returned to his duties after the Joker was placed back in custody.