| Issue | #4 |
| Published | July 1987 |
| Cover Price | 0.75 USD |
| Pages | 36 |
| Editing | Ann Nocenti; Jim Shooter (Editor-in-Chief) |
| Characters | Sunspot; Warlock; Chance; Ariel; Boom Boom; Gomi; Don; Bill; Multiple Man [Jamie Madrox]; Siryn; Devil Dinosaur; Moonboy |
| Genre | superhero |
| Pencils | Kerry Gammill |
| Inks | Tom Palmer |
| Characters | Fallen Angels--Vanisher; Sunspot; Warlock; Chance; Ariel; Boom Boom; Gomi; Don; Bill; Multiple Man [Jamie Madrox]; Siryn; Devil Dinosaur; Moonboy |
| Synopsis | Ariel opens a doorway to the Valley of the Flame so the Fallen Angels can add two additional mutants to their roster, the primitive Moonboy and his giant companion, Devil Dinosaur. |
| Genre | superhero |
| Script | Jo Duffy |
| Pencils | Kerry Gammill |
| Inks | Val Mayerik |
| Colors | Petra Scotese |
| Letters | L.P. Gregory |