Siren is a calm, diplomatic person with strong morals. He often tries to help others, and feels immense guilt when unable to help others who are in pain, leading to him sometimes lacking confidence in himself due to feeling "useless" to his people. He also seems somewhat introverted, since he usually eats alone and repeatedly tries to avoid crowds. Siren has icy blue eyes, icy blue "frogfish" hair, according to Kappa, and a shark tail, He also seems to be very tall compared to other merfolk