Nuke's dad

[Kurosen]

To clarify snes, Nuke was never intended to "fight in" Ragnarok. Odin already knew how Ragnarok would happen because all the gods were fated to play their roles in it. Loki was of the opinion that Odin went a little mad over the years (perhaps it was the other way around, maybe a little of both). Loki wasn't ready to "give up" and let Ragnarok happen. So he created/sired/whatever Arel and hid him from fate so that his role in Ragnarok would be undetermined. He planned for Arel to start Ragnarok before it was "supposed" to happen, thereby breaking the fate that chained the gods.