Religion: not determined yet
Alter Ego: Jefferson Worthington Sandervilt
Other Names: Geoffrey Worthington Vandergill; Jefferson Van Smythe
First Appearance: Young Allies (vol. 1) #1 (Summer 1941): "The Coming of Agent Zero"
Super? (Has Super Powers/Special Abilities/Technology): Yes
Number of Appearances: 36
Teams/Affiliations: The Young Allies