@bacail... see Odin holding the all-father mantle, becoming capable of using his power, losing and eye, ect.
Or if you don't prescribe to that vein, like you pointed out the second half of mythologically Odin, Santa and Merlin are tied by the same thread, so Odin wasn't even Odin to begin with technically, he was Merlin. If you argued it the other way around, I might agree, but Santa is specifically just mantle, those are made to be worn. There's even Woj he has others work for him acting in his role, though it doesn't specify with his mantle, the role itself is shared all the same. Klaus the toymaker is one of his lackey's. You can hold more than one mantle, it's what the mother's do, and part of how Jim works with the Hindu gods, who all hold multiple Mantle's.