| Issue | #56 |
| Published | February-March 1978 |
| Frequency | bi-monthly |
| Cover Price | 0.35 USD |
| Pages | 36 |
| Editing | Paul Levitz |
| Characters | Metal Men [Gold; Iron; Lead; Mercury; Paltinum; Tin]; The Inheritor |
| Genre | superhero |
| Pencils | Jim Aparo (signed) |
| Inks | Jim Aparo (signed) |
| Characters | Metal Men [Gold; Iron; Lead; Mercury; Paltinum; Tin]; Dr. Will Magnus; Johanna Rome; General Caspar; Inheritor [Syntho-Rob One]; Diana Prince; Crystal Carpenter |
| Synopsis | The Metal Men battle the Inheritor and seek out help from Diana Prince at the United Nations to be granted free citizens of the world. |
| Genre | superhero |
| Script | Gerry Conway |
| Pencils | Joe Staton |
| Inks | Joe Staton |
| Colors | Liz Berube |
| Letters | Ben Oda |