Poseidon

Poseidon is one of the Ten Elders and a reincarnation of the Greek god. He can float and fire high-pressure water blasts from his hands, while Princess Suya nicknames him “Nudist.” Reincarnated with a childlike appearance, he was raised by former Demon King Oxenthree alongside Twilight and his reincarnated older brother Hades. Once each Marine Day, increased magical energy lets him temporarily assume a more mature form while his mind remains unchanged.