Silver Heart

The teacher of Joker, Spade, and Diamond Queen. He is a legendary phantom thief who has been called the Silver Magician. He is a genius, but has a sketchy personality and hates anything bothersome. Sometimes, he ends up hurting his back. In truth, he thinks of Joker and the others as his own real children and grandchildren and cares about them, but he won't admit it due to him being embarrassed. In the anime adaptation, he sometimes breaks the fourth wall to explain certain important events in the episode, such as the tricks Joker performs.