Aged 15 years and a native of Switzerland, Roanne is a genius and is by far the most mature member of the group: often displaying a calm, observant level-headedness usually attributed to people well beyond his years. Usually the strategist of the CCC, he was found constantly evaluating the situations they found themselves in determining the best possible solutions from whatever options they had. The best friend of Arthur Cummings Jr., his intelligent maturity quickly endeared him to Eiji as well. Also eventually acted as Eiji's second wingman with the SPT-BD-03U Baldy.