Real Name: Gunther Hardwicke
Occupation: Criminal
Marital Status: Unknown
Base of Operations: Gotham
Height: Unknown
Weight: Unknown
Eyes: Unknown
Hair: Unknown
First Appearance: Detective Comics #253 (March 1958)
Created By: Dave Wood

Gunther Hardwicke a.k.a. the Shark is a criminal inventor and a member of the Terrible Trio (with colleagues Fox and Vulture), who has battled Batman, the current Dr. Mid-Nite, and G'nort. He wears a cartoon shark mask and has created fish-themed technology as a gimmick.