Víðarr

Vioarr, the Norse God of Betrayal.
Son of Odin.
First appeared in Season 2.
One of the few of the Gods, in any pantheon, to ascend from a scion by force of his aspect. Fated to betray the Aesir and survive Ragnarok.
Attempted to see that Cupid was 'talen care of' so that Brunhilde and Momus could marry, uniting the Aesir with The House of Erebus, and he could ensure his place at the 'captain's table'.
His plan was foiled when Fionn rescued Cupid and crashed the wedding along with Eddie, Freija and Modi.