History of character has not yet been written.
- Robotic serpent
- Robotic jaguar
- This version of Hartley, 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.
- 2 Appearances of Hartley (Earth-One)
- 1 Images featuring Hartley (Earth-One)
- Quotations by or about Hartley (Earth-One)
- Character Gallery: Hartley (Earth-One)