Thalasa (MCs)

Thalasa (pronounced: Fal-Ay-Sah) was a Demi-God Son of Poseidon and essentially "Immortal", Thalasa was cursed with living countless lives until the point that he gained immortality for his loyalty to the Gods, this curse was placed on him by Zeus and Poseidon due to Thalasa having a secret relationship with their brother and his Uncle: Hades.

Trivia

 * "Thalasa" is the Greek word for "Sea".