zephiel_(fire_emblem)
Zephiel (known as Zefhyr in Japanese) is the talented but ruthless king of Bern from Fire Emblem: The Binding Blade. He intends to conquer all of Elibe to free Dragonkind, allowing them to dominate over humanity.
He has blonde short hair with a circlet, wears purple armor with a purple, fur-trimmed cape, and wields a transformable sword called Eckesachs. Due to his battle animation, he is jokingly referred to as "the spinning king".
A younger, innocent version of him appeared in Fire Emblem: The Blazing Blade.