Umji considers herself the fashionista of the group, however, when the members were asked who lacks fashion sense, they all jokingly pointed Umji.
Despite all the rumors of not getting along, Umji and SinB are close friends. Umji talks to SinB a lot and relies on her.
Umji's name means "Thumb" in Korean.
Umji once attended IU's concert and gave her a gopchang (grilled small intestines) hair tie along with the message saying, "I’m sure you receive a lot of presents, so I’ll win with practicality,"
IU loved her gift so much and started using it.
Umji loves wearing tracksuits.
Umji can speak English fluently.
Umji is only two months younger than SinB.
The CEO of Source Music saw Umji on the street and invited her to Source Music’s audition.
Umji dreams of doing animation dubbing.