Prince Ralis
Ralis is the prince of the Zora people, son of Queen Rutela in The Legend of Zelda: Twilight Princess. He tried to travel to Hyrule Castle to plead Princess Zelda for help when Zora's Domain froze, but he was attacked by monsters and rescued by Ilia. He became ill because he had spent too long away from water, and requires emergency transport to Kakariko Village to be treated by Renado. He is reluctant to become the King of the Zoras, but resolves these feelings with Link's help. He is an excellent Reekfish angler, and will provide Link with the Coral lure required to catch one, in order to proceed through the Snowpeak area.
He bears some resemblence to Prince Komali from The Legend of Zelda: The Wind Waker, further fueling the speculation that the Ritos of that game are in fact an evolved form of the Zoras.