Sirena is a complex character, often displaying a sweet and alluring demeanor when she wants to get something she desires. She is flirtatious and enjoys playing with people's emotions. However, she can also be quite rude and mean when crossed or provoked. Despite her royal upbringing, she has a rebellious streak and prefers to forge her own path in life. Her intense desire for revenge against the pirate who destroyed her family drives much of her actions and decisions.