Aaron Cash

One of the most senior and respected security guards at Arkham Asylum, Aaron Cash is only afraid of one inmate - Killer Croc, who severely wounded Cash during a riot at the asylum. Cash remains determined, however, to keep the asylum's inmates under control, and to conquer his fears of Croc.

Batman: Arkham Asylum
Cash was one of the many guards present at Arkham, when the Joker was recaptured by Batman. He operated the weapons scanner during his arrival and presented much displeasure at having him return. During the Joker's takeover, Cash made his way to the Medical Facility where the room he was in filled with Joker gas. Cash and a doctor survived the attack by locking themselves in a nearby control room. Batman made his way into Patient Observation, seeing two thugs by the window with one of them contacting Joker to inform him that Cash and Kellerman were locked in. He then tells Joker that a thug named Razor didn't manage to get out in time. Possibly expecting this, Joker replied: "Oh, that will teach him to dillydally." He told them to not let anyone out of the room, including Razor. The thug on the radio mentioned that he was slowing them down anyway. Batman wasted no time in taking out the thugs, which provoked Cash to laugh and say "Go get them, Batman." After beating the thugs, Cash explaines that there was an alarm in Medical and that he saw Kellerman lying on the floor and helped him out. After realising that Cash couldn't get the ventilation system working, Batman opened a vent above the room which lead to the larger room filled with gas. Here he activated the ventilation system, ridding the area of Joker gas and saving the two of them.

Cash regrouped with the rest of the Medical staff and agreed to escort Dr. Penelope Young to the Arkham Mansion in order to find her notes. Inside the mansion, however, Cash and Young were ambushed by the Joker's goons. Cash told Dr. Young to flee as he and Zach Franklin held off the goons. The two were inevitably taken hostage and interrogated on the whereabouts of Dr. Young. While several armed thugs patrolled the room, two of them held Cash at gunpoint with assault rifles taken from other guards they had killed and beat him brutally. One of them struck Cash with his gun, but Arkham's toughest security guard barely flinched. At this, another goon urged, "Hit him again! Harder!" Aaron was struck again, but he only growled, "You're gonna need more than that." The thug finally said with exasperation, "Why, you...Get Joker on the radio. Tell him he's not talking." The other henchman was more persistent however, towering over Officer Cash as he demanded, "Tell us where [Dr. Young] went! Tell us....or we'll cut off your other hand." His additional threat was responded to by Cash's unimpressed reply: 'Do what you want...I'm not talking." "Sure you will. Harley Quinn is on her way up here soon. She knows ways to loosen your tongue. And you don't want to find out how she does it!" "She can do her worst. I'm not talking. Period!" Cash even went so far as to taunt and push his captor further: "You want me to talk? Make me!" Affronted and frustrated, the inmate retorted, "I can sit here all night and watch you bleed. Why defend her. She would not help you." Turning their attention away from Officer Cash momentarily, the two goons began talking among themselves: "Cash stays here. He's ours." "That guard's gonna pay for taking my stuff when I got transferred here."

Shortly afterwards, however, Batman arrived on the scene, rescuing the two guards and learning of Dr. Young's location from Cash. Both men regrouped with Kevin Liew and another security staff member in the mansion when Poison Ivy's plants took control of the island. The group was trapped inside the mansion, with the third member of security killed by the mutant plants. Batman returned to the mansion in order to learn the whereabouts of Killer Croc from Cash, after retrieving the information, Batman instructed that Cash stay put until Poison Ivy was defeated. Cash ultimately survived the attack on Arkham and returned to his post after the Joker's defeat. In the end before returning to his post, he is seen being examined by a doctor in the Medical Facility.