Graphic Novel
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Full name
Harold Allnut

Team affiliations
Batman Family

Supporting character of
Batman

Abilities
Gifted technologist

Batman #465 - Debut
Script : Alan Grant
Pencils : Norm Breyfogle
Inks : Steve Mitchell
Colors : Adrienne Roy
Letters : Todd Klein