Castor Delphinus was the head of the Delphinus Zora Clan living on the coast of the Eastern Ocean. A cunning warrior and bold leader he wielded the Staff of Winds, a staff he supposedly obtained from a windfish far at sea. Castor was the father of Stella Delphinus who he taught the ways of combat from a young age. One day Castor was found dead along a beach with the rest of his immediate family while Stella was attending the academy in Zora's Domain. Stella inherented his staff and position as clan chief following this.
Durring her journey through the Multiverse on the equivalent of Epoch Day 8, Stella briefly meet her father again when she ans Severa came upon an alternate timeline where he didn't die.