| Issue | #21 |
| Published | June 1979 |
| Cover Price | 0.40 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Genre | Superhero |
| Pencils | Ramona Fradon |
| Inks | Bob Smith |
| Reprinted | in Super Friends! (DC, 2001 series) #[nn] |
| Genre | Superhero |
| Script | E. Nelson Bridwell |
| Pencils | Ramona Fradon |
| Inks | Bob Smith |
| Colors | Adrienne Roy |
| Letters | Ben Oda |
| Notes | vs. Yeltu and Fegla (both intro) of the Wondertwins' world Exor |
| Reprinted | in Super Friends! (DC, 2001 series) #[nn] |