| 94 | Fantastic Four (Vol. 1) | 1st Appearance of Agatha Harkness; 1st appearance of Ebony, Agatha’s cat who turns into a demon-like creature; Versus Sandman; Versus Trapster; Versus Wizard; First mention of the name Franklin Richards |
| 94 | Fantastic Four (UK Edition, Vol. 1) | 1st Appearance of Agatha Harkness; Versus Sandman; Versus Trapster; Versus Wizard |
| 54 | Ultimate Fantastic Four | 1st appearance of Agatha Harkness in the Ultimate Universe, a younger version than the 616 character; Quadriptych |
| 54/NS | Ultimate Fantastic Four | 1st appearance of Agatha Harkness in the Ultimate Universe, a younger version than the 616 character; Quadriptych |