King Yamikuro.

King Yamikuro is the main villain from Shiro Ninja Mayhem Crossover The Series. He's an evil dark monster who got accidentally summoned by Eddie Stuart. He created his army of evil demonic minions to take over the Nitroburg. He has a hatred for light. At Christmas special of the series, he hates Christmas so much he wishes he will destroy the entire Christmas. In the season 1 finale. Shiro must battle against him so he'll be defeated by Shiro. In the end, Yamikuro got vanquished by Shiro and he defeated Yamikuro. Then Yamikuro dies and vanished. In season 2, Yamikuro returns from his death and seeks revenge against Shiro.