Arsène Lupin is a Persona in the game 'Persona 5.' He serves as the initial Persona of the protagonist, a high school student who becomes a masked vigilante known as the Phantom Thief. Arsène embodies rebellion and the spirit of the trickster, drawing inspiration from the fictional gentleman thief created by French writer Maurice Leblanc. In the game, Arsène symbolizes the protagonist's awakening to his rebellious nature, aiding him in battles against corrupt individuals by exploiting their weaknesses and using stealth and strategy to bring about justice.