Leon was a ranger-type player and was the only person Nero fully trusted after Siofra died. Unlike many ranger-types who focused on ranged combat, Leon favored the sword and shield and had a pistol as a backup weapon. Although he did not participate in the early campaigns in Kensei Online, being afraid for his life, Leon eventually was convinced to join the frontlines.
Leon's lack of knowledge about MMORPGs was offset by his athleticism and dedication to his work.