| Issue | #19 |
| Published | August 1987 |
| Cover Price | $0.75 |
| Pages | 36 |
| Editing | Bobbie Chase (Assistant); Bob Harras |
| Characters | Apocalypse; War; Famine; Pestilence |
| Genre | superhero |
| Pencils | Walt Simonson |
| Inks | Walt Simonson |
| Letters | Typeset |
| Characters | FEATURE: X-Factor--Cyclops; Jean Grey; Beast; Iceman; Rusty Collins; Skids; Leech; Caliban; GUEST: Angel; VILLAINS: Apocalypse; Horsemen--War; Famine; Pestilence |
| Synopsis | Apocalypse tries to teach his Horsemen teamwork by turning them loose on X-Factor; Pestilence touches Beast making him deathly ill; During the battle, Iceman freezes a good portion of Central Park. |
| Genre | Superhero |
| Script | Louise Simonson |
| Pencils | Walt Simonson |
| Inks | Bob Wiacek |
| Colors | Petra Scotese |
| Letters | Joe Rosen |