Zero Kiryuu, known as Ginga Kishi Zero (零騎士 絶狼), is a major character in the Garo series. He is a Makai Knight who dons the Silver Wolf armor, making him a formidable fighter against Horrors. Initially a rival to the protagonist Kouga Saejima, Zero becomes a loyal ally, showcasing a cool and stoic demeanor. His skills, tragic past, and complex personality make him a fan favorite and a key figure in the series’ ongoing fight against darkness.