| Unofficial Challengers of the Unknown Index |
Credits:
| Art | Bob Brown |
| Lettering | Stan Starkman |
| Associate editing | Murray Boltinoff, George Kashdan |
| Editing | Jack Schiff |
Feature Character(s):
Villain(s):
- Bara and several other aliens (first appearance for all; an alien who reconstitutes some of his partners to take over Earth)
Other Character(s):
- Lyo and Ia (first appearance for both; humanoid aliens)
Location(s):
Story Reprinted in:
- Showcase Presents Challengers of the Unknown #2 (2008)
Credits:
| Art | Bob Brown |
| Lettering | Stan Starkman |
| Associate editing | Murray Boltinoff, George Kashdan |
| Editing | Jack Schiff |
Feature Character(s):
Villain(s):
- Roney (first appearance; steals a cursed gem that releases monsters when light strikes a specific facet)
Other Character(s):
- An unnamed sorcerer (first appearance)
Location(s):
- Middle East
Story Reprinted in:
- Showcase Presents Challengers of the Unknown #2 (2008)