||Alex Summers [Havok]; the Hellfire Club's Inner Circle [Jason Wyngarde; Sebastian Shaw; the White Queen [Emma Frost, 1st app]]; Katherine "Kitty" Pryde [1st app]; her parents [Carmen Pryde (father); Terri Pryde (mother)]; Lorna Dane [a.k.a. Polaris]; Madrox the Multiple Man; Moira MacTaggert; Sean Cassidy [a.k.a. Banshee, leaves]; the X-Men [Colossus; Cyclops; Nightcrawler; Phoenix [Jean Grey]; Professor X; Storm; Wolverine]; Hellfire soldiers; Donald Pierce; Harry Leland
||The X-Men return to the states, but Banshee stays in Scotland with Moira; Upon entering the mansion, the X-Men find Xavier is back and ready to lead the team again; Prof X identifies a new mutant and the X-Men go to recruit her; The Hellfire Club also tries to woo the young Kitty Pryde into their ranks.
||John Byrne (Co-plot); Chris Claremont (plot, script)
||Wolverine reads an issue of Penthouse in the story.
||in Uncanny X-Men, The (Marvel, 1984 series) #nn; in Uomo Ragno, L' (Edizioni Star Comics, 1987 series) #11 [as "Il Club Infernale"]; in Classic X-Men (Marvel, 1986 series) #35 (July 1989); in X-Men: The Dark Phoenix Saga (Marvel, 1991 series) #nn; in Essential X-Men (Marvel, 1996 series) #2 (1997); In X-Men Vol. 1, No. 129 (Marvel, 2003 series) #[nn]; in X-Men: Dark Phoenix Saga (Marvel, 2010 series) #[nn]; in X-Men: We Are The X-Men (Marvel, 2010 series) #[nn]