| Release: | May 1988 |
| Cover: | May 1988 |
Countdown!
| Release: | May 1988 |
| Cover: | May 1988 |
X-Factor are still living in Apocalypse's abandoned Ship, little realizing that it is a sentient booby trap. Meanwhile, Cyclops leaves to search for his son.
| Cover Artist | Walter Simonson |
| Penciller | Walter Simonson |
| Inker | Bob Wiacek |
| Colorist | Petra Goldberg-Scotese |
| Letterer | Joe Rosen |
| Plotter | Louise Simonson, Walter Simonson |
| Scripter | Louise Simonson |
| Editor | Robert Harras |
| Editor in Chief | Tom DeFalco |
| Beast | Henry 'Hank' McCoy |
| Cyclops | Scott Summers |
| Iceman | Robert 'Bobby' Drake |
| Marvel Girl | Jean Grey |
| Rictor | Julio Esteban Richter |
| Apocalypse | En Sabah Nur |
| Leech | |
| Boom Boom | Tabitha Smith |
| Arthur 'Artie' Maddicks | |
| Skids | Sally Blevins |
| Rusty Collins | |
| Caliban | August Hoffer |
| Death | Warren Worthington III |
| Ship | |
| Infectia |
| Age | Modern Age |
|---|---|
| Format | Comic |
| Series Group | X-Men |
| Genre | Action | Adventure | Super-Heroes |
| No. of Pages | 32 |
| Country | USA |
| Language | English |