An Alchemist who makes gold for Sauville during the Gold Rush. He was also the one who killed Ian Musgrave due to his anger and also to prove that he can really make gold out of nothing. During the series, it was revealed that Leviathan was actually an African and that he and The queen, Coco Rose, have a secret relationship which results to a child and also the reason for plotting the Queen's exile and eventually her murder. His missing dead body was also revealed by Victorique which is located at the Clock tower in the Saint Marguerite Academy.