- YeoA (Yeo/reum and Seol/A)
- HyunSook (Hyun/jung and Jin/sook)
- JinJung (Jin/sook and Hyun/jung)
- They both have brown eyes.
- They were both born in Seoul, South Korea.
- They are both members of Y-Teen.
- They both have silver hair.
- SeolA was born in 1994 but Yeoreum was born in 1999.
- Yeoreum can play piano, pipe and Janggu but SeolA can't.
- SeolA is a lead vocalist but Yeoreum is a sub-vocalist and sub-rapper.
- SeolA has an older sister but Yeoreum has a younger brother.
- SeolA is in the sub-units Sweet and ενύπνιον but Yeoreum is in the sub-units Joy and φορεύς.
- They are both in the group Cosmic Girls.
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