|1st Appearance||Super-Mystery Comics V4 #1|
|Publisher||Ace Magazines (Periodical House)|
|Country of origin||USA|
X2 was a Japanese spy who attempted to contaminate American blood banks with leprosy during World War II. He was stopped by Dr. Nemesis. X2 was very athletic and a skilled fighter. He was aided by slaves who he had infected with leprosy. Although he used a whip on his slaves, he generally didn't carry any weapons, except a syringe to infect people.