Trauare Wrede [RKS004 Vier] (トラウアーレ・ヴレーデ, Torauaare Vureede; pronounced Trou-ar Fred-a), also commonly referred to as Trau (トラウ, Torau) by her friends, is the fourth member of the RKS. She is the wielder of the Chaos Spear, Leviathan, and is Zorne Zeppelin's closest friend. Her personality, along with her unintentionally flirty mannerisms, have earned her the nickname of "the Siren".