- This version of Doctor Spectro, 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.
- Doctor Spectro's first DC-published appearance was Crisis on Infinite Earths #9.
- Unlike his Post-Crisis counterpart, the real name of the Earth-Four Doctor Spectro was never revealed.
- 6 Appearances of Doctor Spectro (Earth-Four)
- 1 Images featuring Doctor Spectro (Earth-Four)
- Quotations by or about Doctor Spectro (Earth-Four)
- Character Gallery: Doctor Spectro (Earth-Four)
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