- Chris Claremont
- Dave Cockrum (loose blue pencils); Joe Rubinstein (finished art)
- Joe Rubinstein [as Josef Rubinstein]
- Glynis Wein
- Janice Chiang
- X-Men [Professor X; Storm; Wolverine; Angel; Colossus; Nightcrawler; Kitty Pryde]; Spider-Woman [Jessica Drew]; Dazzler; Banshee; Siryn; Moira Mac Taggert; Illyana Rasputin; Cyclops; Lee Forrester; Stevie Hunter; Caliban (Introduction); Magneto (cameo)
- Angel leaves the X-Men because he doesn't like Wolverine. Banshee discovers Siryn is his daughter. During a girls night out, Caliban tries to kidnap Kitty. Cyclops and Lee arrive at Magneto's ocean fortress.
Interior art information provided 2006 by Dave Cockrum.
Magneto seems to be living in something similar to the Lovecraftian sunken island/city of R'Lyeh.