| Characters |
Dr. Doom; Sub-Mariner; Simon Ryker (Villain); Symbionic Man (Intro, Un-named) |
| Synopsis |
Dr. Doom and Sub-Mariner battle each other, while Simon Ryker tries to steal Doom's power to use in his Symbionic Man project. |
| Genre |
superhero |
| Script |
Bill Mantlo |
| Pencils |
Herb Trimpe (layouts); Jim Mooney (finished art) |
| Inks |
Jim Mooney |
| Colors |
Don Warfield |
| Letters |
Karen Mantlo |
| Notes |
Continued in Marvel Spotlight (Marvel, 1971 series) #27 |
| Reprinted |
In Essential Super-Villain Team-Up (Marvel, 2004 series) #1 |