| Issue | #306 |
| Published | September 1987 |
| Cover Price | 0.75 |
| Pages | 36 |
| Editing | Ralph Macchio |
| Characters | Diablo; Mr. Fantastic; Human Torch; Thing; Crystal |
| Genre | superhero |
| Inks | Joe Sinnott |
| Characters | Medusa; Lunda; Lockjaw; Black Bolt; Karnak; Gorgon; Alicia Masters; Human Torch; Invisible Woman; Franklin Richards; Thing; Crystal; Maya; Capt. America; Ms. Marvel; Quicksilver; Diablo |
| Synopsis | FF battles Diablo; Ms. Marvel joins the FF. |
| Genre | superhero |
| Script | Steve Englehart |
| Pencils | John Buscema |
| Inks | Joe Sinnott |
| Colors | Glynis Oliver |
| Letters | John Workman |
| Notes | Story continues from Fantastic Four Annual #20. |