"Project Earth-Doom!": Two aliens from the planet Duplor die giving Superman a warning about “Earth-Doom”, a plot by their ruler to destroy humanity.
Appearing in "Project Earth-Doom!"
Synopsis for "Project Earth-Doom!"
Two aliens from the planet Duplor die giving Superman a warning about “Earth-Doom”, a plot by their ruler to destroy humanity.
Appearing in "When Superman Lost His Memory!"
- Appearances not yet listed
Synopsis for "When Superman Lost His Memory!"
A freak Kryptonite exposure robs Clark Kent of his memory, and the world thinks Superman is dead.
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