Cronos de Medici

As the esteemed professor of the Obelisk Blue dormitory, this Ancient Gear specialist initially serves as a primary antagonist to Judai. Driven by resentment over a failed entrance exam, he repeatedly attempts to expel the young duelist, only to eventually develop a deep, paternal respect for his student. Whether known as the British-accented Crowler or the Italian-styled Cronos, his journey from a bitter instructor to a saddened mentor defines his role throughout the series.