GREYSTONE CAN GROW TO EMMENSE PROPORTIONS, CAUSING A GREAT INCREASE IN STREGNTH. HE CAME HER WITH THE XAVIAR UNDERGROUND ENFORCERS IN THE FORM OF PSYIC ENERGY AND JOIND WITH BRIAN YOUNG, A RECENTLY DEAD HUMAN. GREYSTONE CAN APPEAR AS BRIAN OR DEVLIN, AND HAS BOTH MEMORIES. HE AND THE X.U.E. CAME HERE TO STOP THEIR FUTURE FROM OCCURING. AFTER THE MISSION WAS ACCOMPLISHED, HE WENT INSANE AND USED HIS X.S.E. TRAINING TO BUILD A TIME MACHINE TO SEND HIM BACK TO A NEW BETTER WORLD. BUT WHEN HAVOK WENT ABOARD, IT BLEW UP AND SENT HAVOK TO THE MUTANT X UNIVERSE, WHILE GREYSTONE APPEARANTLY DIED.
