| Issue | #221 |
| Published | March 1978 |
| Cover Price | 0.35 USD |
| Pages | 36 |
| Editing | Archie Goodwin |
| Notes | Letters page replies by Len Wein. |
| Genre | superhero |
| Pencils | Rich Buckler (as Validar) |
| Inks | Joe Rubinstein |
| Letters | Dan Crespi? |
| Notes | Letters page replies by Len Wein. |
| Characters | GS: Sting-Ray, Doc Samson, Sam Stearns (the Leader) |
| Genre | superhero |
| Script | Roger Stern |
| Pencils | Sal Buscema (breakdowns), Alfredo Alcala (finished art) |
| Inks | Alfredo Alcala |
| Colors | Janice Cohen |
| Letters | Denise Wohl |
| Editing | Archie Goodwin |
| Reprinted | in Hulk el Hombre Increible (Editorial Novaro, 1979 series) #26 [Edited, 2 pp, credits and title removed]; in Uomo Ragno, L' [Collana Super-Eroi] (Editoriale Corno, 1970 series) #265; in Incroyable Hulk, L' (Editions Héritage, 1968 series) #78/79 |