Hydros is the elemental form of Iapetus and one of the five fictional Titans that Hades sets free in the film Hercules. He is slightly a hunchback, made entirely of ice and has blue eyes and a blue mouth. While being made of ice, he can freeze things by touching them with any part of his body. He can belch blizzards from his mouth.
Hydros is defeated when Hercules uses Stratos to suck up Hydros and the other two Titans and then flings him and the other three into outer space.
His name could be refering to the greek word "υδρός" meaning "water".