Real Name: N/A
Occupation: Gang
Marital Status: Single
Base of Operations: Gotham City
Height: N/A
Weight: N/A
Eyes: N/A
Hair: N/A
First Appearance: Batman #21 (February/March 1944)
Created By: Don Cameron

Gang boss Chopper Gant tricks master of military science Hannibal Bonaparte Brown into planning crimes for him. When Batman interferes, Brown comes up with a plan to capture him too. The crooks then try to kill Batman, Robin, and Brown, but Batman escapes in time. Brown then assists the Dynamic Duo in preventing the crooks from robbing a tank factory.