Stefan (ステファン) is an alumnus of Thors Military Academy's Class III ('03-'05).
Stefan is a short individual with closely cropped blue hair and square framed glasses. He wears the standard uniform for commoner students at short, a green blazer over a shirt shirt and red tie, with sand coloured trousers.
Stefan has a hot-blooded character and seems to work hard on any subjects he's currently working on. He believes in perseverance, never giving up even when tough obstacles stand in the way. He and Machias Regnitz get along nicely as they are both smart and intelligent, knowing their way about using technology based equipment; computers, terminals, and of course their love of chess.
Stefan is an commoner student of the prestigious Thors Military Academy in his second year. He is the head of the Chess Club and appears to be its only member. He maintains a rivalry with the Upper Class Chess Club whom he has never been able to defeat until recruiting Machias. Later on after facing each other in a match, the two clubs gain the respect of one another and merge to form a combined club.
He would later join the Imperial Army's computer and network technology division after graduation.
During the Great War, Stefan is one of the unseen Thors Graduates that helps on board the Ark Royal. He had been transferred there after being a civilian working in the military.