Real Name: N/A
Former Aliases: N/A
First Appearance: Savage Dragon #119
Group Affiliations: The Vicious Circle, The Rats
Height: Around 6′
Date of Birth: Unknown
Place of Birth: Unknown
Base of Operations: Chicago, Illinois
Other Distinguishing Features: Rough brown skin.
Marital Status: N/A
Known Relatives: N/A
Grudge is first seen during an attempt to clean out the rats of Chicago’s derelict region named the Danger Zone. Grudge soon leaves the Rats and joins up with the Vicious Circle. He is briefly seen when the Vicious Circle battle the Claw.