Religion: not determined yet
First Appearance: Mystic Comics (vol. 1) #1 (Mar. 1940): "The Green Terror"
Number of Appearances: 2
Teams/Affiliations: The Three Xs
Note: walking encyclopedia
In the 1940s adventurer/private detective team known as the "Three Xs", the man codenamed "2X" was something of a "walking encyclopedia."
Suggested links for further research about this character: