Harold Allnut on the cover of Batman 458
|First appearance||The Question #33 (Dec 1989)|
|Created by||Dennis O'Neil
|Full name||Harold Allnut|
|Team affiliations||Batman Family|
|Supporting character of||Batman|
Character appearance and disabilities
Fictional character biography
Harold's first appearance is in The Question #33 (December 1989), in which he is expelled from his house in Gotham City, and subsequently travels to Hub City. Initially his full name is not revealed, and he goes only by 'Harold'. His first appearance in a Batman comic is in Batman #448 (early June 1990), the first part of the story arc Penguin Affair. Harold is initially cast as a henchman for the Penguin, who had conned Harold to work for him and build deadly machines with which he could threaten Gotham City. Months after putting an end to Penguin's scheme, Batman finds Harold in an abandoned building and saves him from a mob of angry parents have mistaken him for a child molester due to his appearance.
After rescuing Harold, Batman gives him a home and a position in the Batcave, working as a technological aide in his war on crime. His assistance continues even after Bruce Wayne is disabled while fighting the villain Bane. Harold builds a unique wheelchair for Wayne, which includes multiple surprises such as emergency shelter.  During the story arc Knightsaga, the new Batman Jean-Paul Valley ejects Harold, along with Ace and Robin, from the main Batcave. Harold (and Ace) manage to sneak into a hidden subsection of the cave and continue to work there, eventually aiding Nightwing, Robin, and Bruce Wayne to retake the cave from Valley. Harold resumes his position as Batman's technological aide, and also designs a new costume for Nightwing. He worked with Azrael (Jean-Paul Valley) by request of Batman for a time before the death of the former.
Hush saga and death
In the storyline Hush, Harold had been tricked by the titular character into undergoing surgery to repair his voice and his stature. In exchange, Harold was made to place a hidden circuitry relay onto the Batcave's main computer, which gave off subliminal signals which affected Batman's mind. Harold attempts to reveal Hush's identity to Batman, but Hush prevents this by shooting him fatally. In his final words, Harold states, "I knew that even if I had been tricked...you [Batman] are my hero. You would always win", to which Batman responds that he can forgive Harold's betrayal; he understands how powerful the desire to be happy can be. Harold is then buried in a grave overlooking Wayne Manor. Harold's last name, Allnut is revealed by Batman, who 'did some digging', and his full name is engraved onto his gravestone.
- Justice League Task Force #6 (November 1993)
- Nightwing (vol. 1) #2 (October 1995)
- Azrael: Agent of the Bat #76 (May 2001)
- Batman (vol. 1) #618 (October 2003)
- Batman (vol. 1) #619 (November 2003)
- "Batman Chronicles" #11 (Winter 1998)