A highly realistic portrayal of a supervillain named Deep Siren, inspired by the Pisces zodiac sign. This character, either male or female, exhibits control over marine life and the ability to create illusions in water. They are dressed in modern, tactical underwater gear with subtle aquatic accents. The supervillain is in a full-body pose, showcasing their control over water, surrounded by marine creatures or water-based illusions. The background is a detailed underwater scene, emphasizing their deep sea connection. The character embodies an enigmatic and mysterious demeanor, capturing the essence of Pisces.