Rehan Hélios is the grand Duke of the north of ice and snow. He's also an elemental swordmaster that can call upon elemental spirits and make pact with them, earning him to be the emperor's vanguard that protects the Empire's borders from monsters. Rehan is aloof and intelligently inclined and because of his lack of emotions people around tend to perceive him as a cold-hearted individual. His right part of the face is covered with a mask. He talks in a grandiloquent way.