X-Man (1995) #12
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An only child, Rahne Sinclair's mutant powers emerged during the culling of Scotland by the Apocalypse's Horseman Mikhail when her parents attempted to hide her, but failed, and Rahne was discovered by Mikhail's hounds and brought before him alongside her parents whom Mikhail made Rahne beg for their lives, making her pledge allegiance to Apocalypse.
A clone of Nathan Summers (Cable), Nate Grey was created in the "Age of Apocalypse" timeline by that timeline's Mr. Sinister for the sole purpose of destroying Apocalypse.