Phantom Thief Joker is a fictional character from the video game series Persona, specifically appearing in Persona 5. He is the leader of the Phantom Thieves of Hearts, a group that seeks to change the hearts of corrupt adults by stealing their distorted desires. Joker is known for his signature black mask and stylish outfit, which he wears while executing heists in a supernatural realm called the Metaverse. In the game, Joker possesses the ability to summon various Personas, which are manifestations of his inner self. His main Persona is Arsène, inspired by the fictional gentleman thief Arsène Lupin. Joker's character embodies themes of rebellion and justice, making him a symbol of hope for those oppressed by societal corruption.