Appearing in "Mutually Assured Destruction"
- Sheriff Carol Danvers
- Dr. Peter Corbeau
- Angel (Warren Worthington III) (First appearance)
- Elite Mutant Force
- Horsemen of Apocalypse
- Doctor Nemesis (James Bradley)
- Dark Beast (Hank McCoy)
- Wild Child (Kyle Gibney)
- Baron Apocalypse (En Sabah Nur)
- Jean Grey (First appearance) (Main story and flashback)
- Christopher Summers (Mentioned)
- Katherine Summers (Mentioned)
- Nightcrawler (Kurt Darkhölme) (Corpse, skeleton or other remains)
- Namor (Mentioned)
- Gambit (Remy LeBeau) (Photo)
Races and Species:
- Earth-51518 (First appearance) (Only in flashback)
Synopsis for "Mutually Assured Destruction"
- Synopsis not yet written
• The hunt for CYPHER brings MAGNETO’s X-MEN into confrontation with CYCLOPS & HAVOK’s ELITE MUTANT FORCE! Meanwhile, ANGEL has to protect a “flatscan” named JEAN GREY and DR. NEMESIS plans to sabotage DARK BEAST’s quest to become APOCALYPSE’s newest HORSEMAN.