Oodanna (oodanna, lit: Master Innkeeper) is one of the main characters of Kakuriyo no Yadomeshi series. He is an ogre who runs the Tenjin-ya inn, and one of the eight Hachiyo of the Hidden Realm. Furthermore, Ōdanna as the ability to manipulate his appearance to a certain degree but so far is unable to change his hair colour.

Oodanna has the appearance of a handsome pale-skinned young man. He is very tall and has black, medium-length hair with bangs and red eyes. Two short, white horns stick out of his hair atop of his head but irrespective o his appearance he dresses formally and commonly wears a black kimono with a grey obi sash.