Issue: #12
THE FINAL SHOWDOWN FOR...A MAN CALLED X!It's XAVIER and PSYLOCKE versus PROTEUS!In a battle for reality itself, which of these super-powered psychics will win?And when the dust settles, what's next for the Astonishing X-men?
Creators: Alan Fine, Clayton Cowles, Dan Buckley, Joe Quesada, Jordan D. White, Greg Land, C. B. Cebulski, Darren Shan, Gerardo Sandoval, Erick Arciniega, Annalise Bissa, Jay Bowen, Anthony Gambino, Edgar Delgado, Charles Soule
Characters: Angel, Emma Frost, Professor X, Betsy Braddock, Rachel Grey, Wolverine, Bishop, Mystique, Rogue, Gambit, Chamber, Synapse, Blindfold, Fantomex, Mindee Cuckoo, Quentin Quire, Celeste Cuckoo, Proteus, Shadow King, Phoebe Cuckoo
Story arcs: A Man Called X