Nanion D'Or is the leader of the people of D'Or, a city that was founded by foreigners to Deltora. It was named after Nanion's family name. He was born in the town of Fleet on the island of Dorne, and is the son of Nanion of Fleet, from whom he has his name. He is married to Ethena, who helps lead the people of D'Or alongside her husband. He was cursed by Thaegan and turned into Soldeen, a demonic sea monster to guard the ruby. Resembling a mix of an eel, a catfish and a shark. With his wife turned to stone, Nanion's people were transformed into various creatures residing in the Lake of Tears created by Thaegan. Though he battles Lief, Soldeen regains his memories as Nanion and helps in getting the ruby before Thaegan arrives. Upon her death, the Lake dries up and both Nanion and D'or are restored to their original forms.