| Issue | #12 |
| Published | May-June 1967 |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | George Kashdan |
| Characters | Metamorpho [Rex Mason]; Sapphire Stagg |
| Genre | superhero |
| Pencils | Sal Trapani |
| Inks | Charles Paris |
| Reprinted | In Showcase Presents: Metamorpho (DC, 2005 series) #1 |
| Characters | Metamorpho [Rex Mason]; Simon Stagg; Sapphire Stagg; Java; Franz Zorb; Hafnium (Robot); Osmium (Robot); Selenium (Robot); Strontium (Robot); Tantalum (Robot); Thallium (Robot) |
| Synopsis | Simon Stagg hires Franz Zorb to try to cure Metamorpho but Franz Zorb uses the lab to create chemical robots and take over Stagg's mansion. |
| Genre | superhero |
| Script | Bob Haney |
| Pencils | Sal Trapani |
| Inks | Charles Paris |
| Notes | Part 1 |
| Reprinted | In Showcase Presents: Metamorpho (DC, 2005 series) #1 |
| Characters | Metamorpho [Rex Mason]; Simon Stagg; Franz Zorb; Tantalum (Robot); Selenium (Robot); Sapphire Stagg; Java; "Touchdown Tucker" (College friend of Stagg's); Professor Kronski |
| Synopsis | Metamorpho battles Zorb's robots who travel to a nearby college to steal a Nucleonic Moleculizer Projector during a football game. |
| Genre | superhero |
| Script | Bob Haney |
| Pencils | Sal Trapani |
| Inks | Charles Paris |
| Notes | Part 2 |
| Reprinted | In Showcase Presents: Metamorpho (DC, 2005 series) #1 |
| Characters | Metamorpho [Rex Mason]; Simon Stagg; Franz Zorb; Osmium (Robot); Tantalum (Robot); Thallium (Robot); Java; Sapphire Stagg; Hafnium (Robot) |
| Synopsis | Metamorpho fights Zorb's robots during the first half of a football game. |
| Genre | superhero |
| Script | Bob Haney |
| Pencils | Sal Trapani |
| Inks | Charles Paris |
| Notes | Part 3. Story continues next issue. |
| Reprinted | In Showcase Presents: Metamorpho (DC, 2005 series) #1 |