| Release: | Apr 1968 |
| Cover: | Jun 1968 |
Mordru The Merciless!
| Release: | Apr 1968 |
| Cover: | Jun 1968 |
| Writer | Jim Shooter |
| Cover Artist | Neal Adams |
| Penciller | Jim Shooter, Curt Swan |
| Inker | Jack Abel |
| Letterer | Charlotte Jetter |
| Editor | Mort Weisinger |
| Superman | Kal-El / Clark Kent |
| Lana Lang | |
| Martha Kent | |
| Jonathan Kent | |
| Cosmic Boy | Rokk Krinn |
| Superboy | Kal-El / Clark Kent |
| Mon-El | Lar Gand |
| Sun Boy | Dirk Morgna |
| Shadow Lass | Tasmia Mallor |
| Saturn Girl | Imra Ardeen-Ranzz |
| Duo Damsel | Luornu Durgo |
| Mordru | Wrynn |
| Chief Parker | Douglas Parker |
| King Carter |
| Age | Silver Age |
|---|---|
| Format | Comic |
| Genre | Action | Adventure | Science Fiction | Super-Heroes |
| No. of Pages | 32 |
| Country | USA |
| Language | English |