Arkham Asylum IncidentHenry Smith was one of the many security guards that were present at Arkham Asylum, when the Joker was recaptured by Batman. Henry was posted at the Intensive Treatment Center to guard the Joker during his transfer. Like many of the other guards, Smith presented much displeasure at watching the evil clown return, and remarked dryly as the elevator that carried the Joker and his guards reached his post: "Our 'guest' has arrived." Smith opened the elevator door for Batman, who was escorting the Joker through the facility, while three other guards kept their assault rifles trained on the grinning madman. Smith followed Batman and the Joker to the Transfer Loop, and growled to the Joker: "So, you're back. You killed three of my crew when you busted out of here." That prompted the Joker to respond as if provoking Henry, and expressed mock surprise: "Only three? I'll be sure to try harder next time. What say we aim for a hundred?" Smith paused with a grim expression, and Batman and the Joker's escort continued to the reception area of Patient Handover. After Smith watched them leave, he added to himself: "I've been looking forward to [the Joker]'s return. He's not going anywhere."
During the Joker's takeover, Smith made his way back to the elevator in the Secure Transit area, where he tried in vain to operate it. Unknown to Smith, another guard, named Frank Boles, who sided with the Joker after his escape, had been instructed to kidnap Commissioner Gordon, to whom he had brought into the care of Harley Quinn. The trio had used the elevator, and rendered it unusable for Smith. Smith tinkered with the controls in frustration, and demanded aloud to know what was wrong with it. Meanwhile, Batman was able to pick up traces of Boles' favorite tipple in the Arkham air and began following it in the hopes that it would lead him not only to Boles but to Gordon, himself. Batman shortly arrived at the elevator, following Boles' trail.
Batman came across a frustrated Smith, who cursed that the elevator was "stupid and unreliable". Upon seeing Batman, Smith demanded to know how Joker had gotten free and what was going on, and broke Batman's concentration despite the Dark Knight's order for him to remain silent. Batman soon deduced by the trail that Boles had left in the elevator, now hopelessly jammed. As Batman studied the trail, Harley landed on the elevator box, taunted Smith and Batman, and informed them that the Joker did not want them to be followed yet. She then detonated a bomb on the elevator, which sent the box crashing toward the ground. Batman yelled for Smith to get down, as the dazed guard could only stare in horror when the severed elevator box hurtled toward him.
Shoved out of the way by the Dark Knight, Smith was saved as Batman took the brunt of the blast's effects himself when the elevator crashed. Smith staggered to his feet, although he was only able to ask what had happened. As Smith picked himself up, Harley laughed at Batman, said that he could not follow her, and that he was trapped down there until her and the Joker were ready for him. Rubbing his sore head, Smith seated himself in a nearby wooden chair, and was still dazed by his close brush with possible death. When further approached by Batman, Smith noted: "I take it this is Joker's doing?", to which Batman responded: "Who else?"
A furious Smith's attitude toward the Joker was apparently further hardened by his most recent encounter with Harley. Smith displayed that as he spoke with Batman, called Joker a "monster" and stormed that he had been lobbying for the villain to be put on Death Row for his crimes. Batman told Smith to calm down as the security guard regained his composure, and assured him that the Joker would be apprehended.
Smith's character model was reused as a corpse outside the Penitentiary and also appears in the Sanatorium with other Arkham staff during the game's final cutscene. His status remains uncertain.