Real Name: N/A
Occupation: Villain
Marital Status: Single
Base of Operations: Gotham City
Height: N/A
Weight: N/A
Eyes: N/A
Hair: N/A
First Appearance: Detective Comics #55 (September 1941)
Created By: Bill Finger

Doctor Derek was an Axis spy who used the "brain machine" to threaten/blackmail/drive important American men crazy by putting a sliver of metal in their heads, then broadcasting radio waves directly into their brains.