- They both have brown eyes.
- They both have a sibling.
- They were both born in Seoul, South Korea.
- They both have brown hair.
- Soobin was born in 1996 but Luda was born in 1997.
- Soobin has a younger brother but Luda has an older sister.
- Soobin is a member of Y-Teen but Luda is not.
- Luda is a member of WJMK but Soobin is not.
- Soobin can play piano, flute, violin and guitar but Luda cannot.
- Soobin is in the sub-units Sweet and αγύρτης but Luda is in the sub-units Natural and ενύπνιον.
- They are both in the group Cosmic Girls.
- They are the shortest members. They are known as the pocket girls of Cosmic Girls.
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