Uomihime is very quiet though speaks on some occasions. Due to her large eyes and lack of blinking, one cannot tell if she is awake or asleep. if she is asleep, Mikotsuhime cannot be awake. When she sleeps, Jiiya talks for her.
Uomihime's favorite color is a sea blue color. Her favorite food is seaweed and sweet candies. Her specialty is not blinking and the ability to not move an inch. She has never been seen fighting, but some characters believe she is really powerful.