| Issue | #21 |
| Published | August 2001 |
| Cover Price | $2.50 |
| Pages | 36 |
| Editing | Lysa Hawkins |
| Characters | Beast; Cyclops; Iceman; Marvel Girl; Havok; Professor X; Magneto; Sub-Mariner; Invisible Girl; Mr. Fantastic; Thing; Human Torch; Crystal |
| Genre | Superhero |
| Pencils | John Byrne |
| Inks | John Byrne |
| Colors | Greg Wright |
| Characters | Beast; Cyclops; Iceman; Marvel Girl; Havok; Lorna Dane; Professor X; Magneto; Sub-Mariner; Invisible Girl; Dorma; Lucy Robinson; Mole Man; Ashley Martin; Teri Martin; Pixie; Ikaris; The Promise (organization) |
| Synopsis | Magneto takes Dorma and the Invisible Girl hostage; Lucy Robinson, Angel & the Professor (in astral form) free Havok from the Promise's suspended animation, but Lorna's hibernation pod is damaged in the process; Havok heads to Manhattan to help fight Magneto, and attacks some invading Atlantean troops. A panicked mob attacks Havok, thinking him in league with the Sub-Mariner; The X-Men continue to fight the Mole Man, but are defeated; Angel searches for the X-Men, but is stopped by Pixie and Ikaris of the Eternals. |
| Genre | Superhero |
| Script | John Byrne |
| Pencils | John Byrne |
| Inks | Tom Palmer |
| Colors | VLM |
| Letters | John Byrne |
| Notes | This storyline runs concurrently with the events of Fantastic For (Vol. 1) #102-104. |
| Synopsis | Letters Page |