| Unofficial Superman Index |
Chapter III: "The Duel of the Supermen!"
Credits:
| Story | Otto Binder |
| Pencils | Wayne Boring |
| Inks | Stan Kaye |
| Editing | Mort Weisinger |
Feature Character(s):
- Superman (last in World's Finest Comics #106; next in Superman's Girl Friend Lois Lane #14)
Guest Star(s):
- Krypto (last in Action Comics #258/3; next in Superman's Pal Jimmy Olsen #45/3)
- Supergirl (last in Action Comics #258/3; also in flashback; next in Superman's Girl Friend Lois Lane #14/3)
Supporting Character(s):
- Jor-El (in flashback following flashback in World of Krypton #1 and preceding Superman Vol. 1 #123
- Jimmy Olsen (in between Superman's Pal Jimmy Olsen #41/3 and #42)
- Lois Lane (last in Superman's Pal Jimmy Olsen #41/3; next in Superman's Girl Friend Lois Lane #14)
- Perry White (last in World's Finest Comics #106; next in Superman's Girl Friend Lois Lane #14/2)
Villain(s):
- Zell-Ex (first appearance; in flashback; an inventor who wrongly accuses Zor-El of stealing his ideas and vows revenge; dies)
- Kull-Ex (first appearance; son of Zell-Ex; disguises himself as Superman to wreak havoc; also in flashbacks)
Other Character(s):
- Dr. Peabody (first appearance)
- President Dwight D. Eisenhower
- Kull-Ex's mother (first appearance; in flashback)
Cameo Appearance(s):
- Zor-El (in flashback)
- Alura Zor-El (in flashback)
Location(s):
- Space Sector 2813
- Krypton (in flashbacks)
- Space Sector 2814
- Earth
- Egypt
- Fortress of Solitude
- Metropolis
- Midvale
- The Grand Canyon
- Washington, DC
- The White House
- Earth
- Unidentified Space Sector
- Argo City (in flashback)
Story Reprinted in:
- Showcase Presents Superman #2 (2006)