The Knight who protects you is highly disciplined. Because of his strictness, everybody calls him, the Prince of Darkness...

Ace Spade is the Lord of Spades and the older brother of Jaiden Clover who resides in the Kingdom of Playing Cards' Spade domain. He is a loyal subject and bodyguard of the Queen of Hearts.

Ace is a handsome man having short, spiky black hair tinted in purple along with sharp amethyst eyes. He covers his left eye with a black eyepatch.