History of character has not yet been written.
- Enemy of the Seven Soldiers of Victory
- This version of Mister X, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 1 Appearances of Mister X II (Earth-Two)
- 1 Images featuring Mister X II (Earth-Two)
- Quotations by or about Mister X II (Earth-Two)
- Character Gallery: Mister X II (Earth-Two)