Appearing in "Murder at the Mansion"
- X-Treme X-Men
- Xavier Institute student body
- Four-In-One (Stepford Cuckoos)
- Xaiver's Special Class
- Forearm (Marcus Tucker)
- Choir (Irina Clayton)
- Longneck (William Hanover) (First appearance) (Unnamed)
- Phoenix Force
- Cannonball (Sam Guthrie)
- Incredible Hulk (Bruce Banner) (Mentioned)
- Cyclops (Scott Summers) (Mentioned)
Synopsis for "Murder at the Mansion"
- Synopsis not yet written
Even though Cyclops, Archangel, Chamber, Gambit, Husk, Iceman, Jubilee, Juggernaut, Kitty Pryde, Northstar, Polaris, Rogue and Storm appear on the cover of this issue, they do not appear inside the issue itself.