| Issue | #21 |
| Published | October 1974 |
| Cover Price | 0.25 |
| Pages | 36 |
| Editing | ? |
| Notes | Cover credits provided 2006 by Nick Caputo. |
| Genre | superhero |
| Pencils | Ron Wilson |
| Inks | Frank Giacoia |
| Notes | Cover credits provided 2006 by Nick Caputo. |
| Genre | superhero |
| Script | Stan Lee |
| Pencils | Don Heck |
| Inks | Frank Giacoia (as Frank Ray) |
| Letters | Artie Simek |
| Reprinted | from Avengers, The (Marvel, 1963 series) #27 (April 1966) |