I'm unsure I would say that Odyn is himself a "being of the Light." He appears to be able to use it, but he certainly doesn't cleave to the various altruistic philosophies we've seen typically associated with veneration of the Light as a concept. Odyn is a Warrior paragon, believing in valor above all, even above and beyond the bonds of external loyalties. For Odyn it seems might truly makes right, and that's not a concept that would seem very in line with the general position of the Light.