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I feel like Micah was watching "the Dragon Prince" while writing the end of Wight Winter.
V-king Nyve and the V-head (I forgot his name) have a lot of parallels to lord Viren and prince Ezran. So many, in fact, that I think Micah might've taken inspiration from these characters.
The first obvious parallel is that Nyve is a child king who has a regent ruling for him until he gets older. Not only that, but his regent is his uncle, much like prince Ezran and lord Viren. The V-head is also shown to have a pretty bad personality, telling servants off for the smallest things, and trying to kill his own nephew for the throne, which is also what lord Viren attempted to do to Ezran.
And if I didn't convince you yet, V-king Nyve can talk to animals... YOU KNOW WHO ELSE CAN TALK TO ANIMALS?!!?!?
Anyways, thank you for coming to my deranged Ted talk...
Tldr: I think V-king Nyve and the V-head are inspired by prince Ezran and lord Viren from the Dragon Prince.