Princess Pearl

is a Legendary Yo-kai of the Charming tribe.

Origin
Otohime is based on the sea goddess of the same name, also known as Toyotama-hime (豊玉姫): she is the daughter of Watatsumi and queen of the Ryūgū undersea palace (see Ningyo). After marrying the fisherman god Hoori she gave birth to the god Ugayafukiaezu, who would then be the father of Jinmu, Japan's first emperor. Most famously, she appears in the Urashima Tarō fairytale, and her true form is said to be either that of a sea dragon or a crocodile.