| Name | X2 |
| A.K.A. | none |
| Secret ID. | Unknown |
| Type | Costumed Villain |
| Affiliation/Team | None |
| 1st Appearance | Super-Mystery Comics V4 #1 |
| Year | 1944 |
| 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.
