Nico serves as a crew member aboard the airship Quin Zaza, renowned as its best sniper and a veteran draker with expertise in hunting dragons. He habitually wears a hat or bandana that obscures most of his forehead and eyes, casting his face in perpetual shadow and creating an intimidating first impression that belies his true nature. This concealed-eye trait frequently leads others to misjudge him upon initial encounters.

Personality-wise, Nico exhibits a sly, cunning, and snarky demeanor, often teasing fellow crew members with playful jabs. He particularly targets Jiro about romantic interests, revealing a fun-loving but occasionally lecherous side. Despite his mischievous tendencies, he holds strong principles against greed and selfishness, openly criticizing Mika’s excessive appetite and steadfastly refusing to take more than his fair share of food. Nico demonstrates fierce loyalty to the crew, exemplified when he instigates bar fights to defend Jiro from disrespectful drakers. His protective nature extends to treating Jiro as a younger brother, offering guidance and expressing deep concern for his well-being.