Otus

Otus Aquatic Demigod and son of Poseidon. Appeared in Hercules and the Trojan War wherein he was a foreign exchange student at Trojan Academy who fought against Hercules during the Prometheus Academy raid on Trojan Academy

Mythology
In Greek mythology, the Aloadae (or Aloadai; Ancient Greek : Ἀλωάδαι) were Otus (Ὦτος) and Ephialtes (Ἐφιάλτης), sons of Iphimedia , queen of Aloeus , by  Poseidon , whom she induced to make her pregnant by going to the seashore and disporting herself in the surf [1]  or scooping seawater into her bosom. [2]  From Aloeus they received their patronymic , the Aloadai. They were strong and aggressive giants, growing by nine fingers every month [3] nine fathoms tall at age nine, and only outshone in beauty by Orion.