History of character has not yet been written.
- This version of Gravity Lord, 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.
- Enemy of Supergirl and the Doom Patrol
- Appearances of Martin Tain (Earth-One)
- 1 Images featuring Martin Tain (Earth-One)
- Quotations by or about Martin Tain (Earth-One)
- Character Gallery: Martin Tain (Earth-One)
Doom Patrol Villain(s)