Nathaniel Richards is also known as 'Bender' or 'Immortus'.
Under the guise of Bender, Immortus guided a temporally displaced Bishop throughout the Axis of Time. He showed the time travelling mutant the events of the past, present and future, whilst remaining undetected from Apocalypse, who had taken over the area. Finally, he got Bishop to help save the captured psychics that Apocalypse had kidnapped. After the X-Men and Cable defeated Apocalypse and everyone returned to their own realities, Immortus dropped his 'Bender' disguise and started to rebuild his destroyed castle.