Real Name: N/A
Occupation: Criminal
Marital Status: Single
Base of Operations: Gotham City
Height: N/A
Weight: N/A
Eyes: N/A
Hair: N/A
First Appearance: Batman: Family #1 (December 2002)
Created By: N/A

An expert in chemicals which can be used for criminal purposes, Doctor Excess works with a Network of criminals, using the front of legitimate medical practices to sabotage and even to kill. He specialises in performance-enhancing compounds.