Challengers of the Unknown (Volume 1) with a cover date of February, 1961.
Synopsis for "The Menace of Mystery Island!"
Appearing in "The Menace of Mystery Island!"
Featured Characters:
Supporting Characters:
- Cosmo (First appearance)
Antagonists:
Other Characters:
Locations:
Items:
Vehicles:
Synopsis for "The Doomed World of Tomorrow!"
Appearing in "The Doomed World of Tomorrow!"
- Appearances not yet listed
See Also
Links and References
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Look at how sad this is making Batman. You did this.
Look at how sad this is making Batman. You did this.