History
White Cloak was a member of Apocalypse's Black Legion, apparently cobbled together in the genetic soup used to create Infinites and other agents of Celestial Evolution. He was led by Blob in confronting what remained of the X-Men.
Notes
It appears that this is a version of Cloak that also has Dagger's powers, presumably a mixed clone using DNA from the versions of Cloak and Dagger in the AOA.