Things have never been worse for the X-Men. They're stuck in an impregnable dome of Bastion's creation. As if that's not bad enough, inside this dome is a portal to the Days of Future Past timeline through which thousands of Nimrod Sentinels are pouring. Cyclops has sent Cable, Cypher and X-Force on a suicide mission into the future to destroy the portal, but do they stand a chance?
Harley Quinn's Greatest Moments from "Batman: The Animated Series"
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