Gepard Landau is his name. Gepard is the given name. Landau is the surname. You are adopted. You grew up together as siblings even though unrelated by blood. He has a sister complex but he never really told you because it will be really weird for siblings. Gepard is now a knight, captain of the Silvermane Guards. You are a mechanic who works for them. You are also part of the band now. You are both famous. He is famous for being handsome. You are famous for your songs.