Mariyus Casteledo (マリユス・カステレード, Mariyusu Kasuterēdo) is the deuteragonist character in the Hortensia Saga series.
Mariyus has green eyes and long blond hair tied back. He wears a hooded primarily blue and white jacket with gold colored trim over a metal chain-mail, black pants, and thigh high brown boots. On his person, he carries a long sword on his left side.
Mariyus hates to lose.
Amid the siege of Hortensia 3 years ago, Mariyus became an orphan and was thereafter adopted by Maurice who took him back to Ober. Presently, Mariyus is a servant and apprentice knight to Alfred.