Former king of the country of Winner. A young king who also served as a priest, he lost his country in an attack several years ago. Since then, he has disguised himself as a knight and traveled with his subjects in search of a safe haven. Upon learning of the advance of Genesis Army OZ World, he led his subjects in a resistance movement for the Union Clan. After the destruction of the Magic Machine Soldier, his revival and his own destiny led him to the land of Argus.
Quatre heads for the legendary land of Argus to end the war. A proud knight, Quatre has been entrusted with the mission of uniting his comrades.
In the land of Argus, the knight Quatre obtained the Guiding Harp. Having acquired the leadership skills of Knight Alex, Quatre headed to the Kingdom of Lacroa and led the Union forces into an impenetrable formation.
As Quatre's leadership skills grew, and thanks to his bond with the Guardian Machine God Sandrock, the Guiding Harp evolved into a powerful curved sword. The potential of Knight Alex was awakened in him, and he became the New Argus Knights.