Sidon

The younger brother of the Zora Champion, Mipha, Sidon is a jubilant and heroic prince, and regards Link as his most dearest friend. Due to the slow aging process of the Zora people, he is one of the few surviving characters who personally met Link before the Calamity War that sent him to sleep for 100 years.

Since his sister's passing, Sidon has taken up the mantle of Zora Champion, and worked with Link to defeat the Waterblight Ganon that had kept their Divine Beast under the control of evil.

After joining forces with Link once again, he inherited a secret stone and awakened as the Sage of Water. In recognition of Sidon’s role in saving the domain, Dorephan crowned his son as the new king of the Zora. Sidon’s older sister, the Champion Mipha, fought Calamity Ganon one hundred years ago.

He and Yona are now officially married.

You'll meet Sidon during the main story quest, "Regional Phenomena," when you go to Zora's domain to investigate what's going on there. Once there, complete the quest The Sludge-Covered Statue to learn about Sidon's exact location.

According to IMDB, James D. Mortellaro is reprising his role as Prince Sidon in Tears of the Kingdom.

Mortellaro has been a voice director in games like God of War: Ragnarok, Wasteland 3, Horizon Zero Dawn, and Hitman.