Tua is a supporting character in Siren's Lament. He's a siren, and good friends with Ian. He has an attraction towards Pele, a fellow siren.  Tua first shows up trying to scare Lyra in the ocean, but turns out to be a fun-loving spirit who tells Ian and Lyra the stories of Poseidon, the leader of sirens. He cares very much about the people he's met. Has a High-Medium pitched voice.