History of character has not yet been written.
- This version of Steel Skull, 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.
- Appearances of Klaus Von Horst (Earth-One)
- 1 Images featuring Klaus Von Horst (Earth-One)
- Quotations by or about Klaus Von Horst (Earth-One)
- Character Gallery: Klaus Von Horst (Earth-One)