Sven Vollfied is a sweeper and Train's partner. The 30-year-old follows a strict code of chivalry: he is always respectful to women and children and acts very proper. He befriends Eve, being the first person to treat her like a human, which causes the two to become very close like a father and daughter relationship. He is often tortured by Train's capricious personality and is usually dragged into trouble and even more debt because of it. Sven is skilled in skilled in inventing.