The Character: Cable, the estranged son of Scott Summers, has a bizarre comic-book history. After his birth he was raised in the future, and he returned as a gruff, no-nonsense mercenary with a techno-organic arm. Telekinesis and telepathy are his main powers.
Could He Hold His Own Against Magneto? Those are two pretty powerful powers to have in combination, as long as Magneto's not wearing that pesky helmet. His stoic hardman character would make a pleasing contrast to Fassbender's Bondian brand of villainy.
'60s Version: They'd need to cut out the time travel for a start, perhaps reinventing him as a Summers ancestor. He could meet the X-Men as a soldier for hire after becoming disillusioned by the events of the Cold War.