| Issue | #590 |
| Published | July 1987 |
| Cover Price | 0.75 USD; 1.00 CAD |
| Pages | 36 |
| Editing | Andrew Helfer; Michael Carlin |
| Characters | Chemo (shaped as Superman); Metal Men [Gold; Iron; Lead; Mercury; Platinum; Tin] |
| Genre | Superhero |
| Pencils | John Byrne (signed) |
| Inks | John Byrne (signed) |
| Reprinted | in Superman: The Man of Steel (DC, 2003 series) #4 |
| Characters | Superman [Clark Kent; Kal-El]; Metal Men [Gold; Iron; Lead; Mercury; Platinum [Tina]; Tin]; Lois Lane; Doc Magnus [Will Magus]; Mr. Lydecker; Negative Woman (flashback; cameo; from parallel Earth); VILLAIN: Chemo |
| Synopsis | When Clark Kent accidently falls in a vat of chemicals, a new Chemo is born. |
| Genre | Superhero |
| Script | John Byrne |
| Pencils | John Byrne |
| Inks | Dick Giordano |
| Colors | Tom Ziuko |
| Letters | John Costanza |
| Reprinted | in Superman: The Man of Steel (DC, 2003 series) #4 |