Roanne Demitrich  

, ロアン・デミトリッヒ

Roanne is a 15-year-old native of Switzerland who possesses exceptional intelligence and is often regarded as the most mature member of their group due to his calm, observant demeanor. As the strategist for CCC, he frequently evaluates situations and determines the best possible solutions from available options. Roanne's close friendship with Arthur Cummings Jr., Eiji, and later Baldy has endeared him to these individuals.