Nude King

"I'm the naked king who holds nothing and wears nothing. Besides this power of darkness of course."

He was once a kind king who loved his country.
But he made a contract with a person of darkness and gained a great power and was corrupted. He started scheming to sink the world into darkness.
There is no trace of his former self left, he's now selfish and arrogant.

Spoiler

For the majority of the game he is possessed by Loki.