Karl Agathon is a fictional character from the video game series Persona, specifically appearing in Persona 3. He is known for his role as a member of the SEES (Specialized Extracurricular Execution Squad), a group that fights against creatures known as Shadows. In the game, Karl Agathon is characterized by his strong sense of justice and determination. He often serves as a moral compass for his teammates, guiding them through the challenges they face. His interactions with other characters help to develop the game's themes of friendship and sacrifice.