- HaSoul (Ha/Seul and Jin/Soul)
- JinSeul (Jin/Soul and Ha/Seul)
- Both were born in South Korea.
- Both have dimples.
- Both are in the elder/unnie line.
- Both were born in 1997.
- Although both were born in South Korea, HaSeul had moved to America to study.
- HaSeul can speak English, whereas JinSoul cannot.
- Jinsoul is apart of the sub-unit ODD EYE CIRCLE, whereas HaSeul is in LOONA 1/3.
- JinSoul is older.
- JinSoul had her hair bleached blonde for her debut, whereas HaSeul had kept her brown hair.
- They are in the group LOONA.