X-Men 97 Episode 1 "To Me, My X-Men"

One year after Henry Peter Gyrich's assassination attempt on Professor Charles Xavier led to Xavier leaving Earth with the alien Shi'ar and being presumed dead,[a] the X-Men continue his mission of defending mutants and humans alike. Xavier's supposed death has led to the X-Men being legally sanctioned by the United Nations (UN). They save a young mutant, Roberto da Costa, from the anti-mutant group Friends of Humanity (FoH) who are using Sentinel technology. To find Sentinel creator Bolivar Trask, the X-Men visit Gyrich in prison and Jean Grey probes his mind using the machine Cerebro to amplify her psychic abilities. She locates Trask at a junkyard in the Sahara, but also receives a horrifying premonition. The X-Men destroy the remains of several Sentinels and a Master Mold supercomputer at the junkyard and apprehend Trask. Cyclops and a pregnant Jean announce that they are leaving the X-Men to raise their son in safety. They are interrupted by their former adversary Magneto, who reveals that Xavier gave him control of the X-Men and Xavier's school for mutants in his last will and testament.