X-Men Who Are Currently On A Leave Of Absense To Hunt Down The Books Of Truth[?]:
Deceased X-Men:
Former Members:
X-Men Allies:
Villains:
... ataxia cataract aminoaciduria mental retardation[?] Arachnodactyly mental retardation dysmorphism[?] Arachnoid cysts[?] Arachnoiditis[?] Arakawa'sa syndrome ...