Giro seems to be gentle, calm, and straightforward. He is very kind and just, demonstrated by how he took Vent under his wing when he found them alone. Still, he can also be strict with Vent (such as when Vent says Prairie is "only a girl" and Giro scolds him for his comment). He has good business sense, as Giro Express seemed very successful, even after his death. He is also very respectful of Model Z, calling him a "partner" rather than a weapon. In battle he is fierce and powerful; nevertheless, he was a pacifist, as in the ending vision he entrusts the world to the hands of Vent/Aile and asks that they "guide this country to peace.