I would also consider the corrupted Saruman "the many colored" who was himself one of the Istari , a group including Gandalf "the gray" who is definatly knowen to be Olorin THe Maiar. Saruman created his own Orc hosts and unamed perversions in the tower of Orthanc and desired Power no less than that of the dark lord himself thoroughly aligning hiself with the dark
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