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He is generally cheerful and hyperactive. He tends to shout to express his thoughts and goals, regardless of others' opinions, as seen when he expressed his goal of becoming a Magic King during the Knight Entrance Exam.
Magical, where he tells others to be quiet if they disagree with him. His great tenacity interests Yami Sukehiro enough to recruit him into his ranks. His unwavering determination also leads him to have an iron will to never give up and remain steadfast during a difficult battle, as Magna Swing recognized.

Asta Staria is a short, muscular young man.
She has green eyes and messy ash-blond hair, with a single strand sticking up from the center of her head. Her hair is tied back with a black headband, which displays the gold insignia of the Toro squadron.
Black with a four-sided red star and three stitches on the back. Her usual attire consists of a simple white V-neck tunic under a dark blue jacket with elbow-length sleeves. She wears matching shorts with a stitch on the left side.
His trousers also reach just below his knees. His shoes are made of two different fabrics: the parts covering his ankles and soles are the same color as his jacket and trousers. The parts covering his toes are white, with a vertical stitched line running from the arch of his foot to his toes.