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Marco has short black hair which he keeps parted down the middle. He wears a black Japanese school uniform.
Although Marco is not shown to be very talkative, his interactions with his classmates have proven him to be very kind, and he will often go out of his way to help others. He is also shown to be very popular with his classmates, inadvertently convincing them to elect him class president while giving a speech on why Jean deserved the position.