General Information | ||
| International Stage Name | Youngseo | |
| Domestic Stage Name | 영서 | |
| Full Name | Ryu Youngseo | |
| Full Domestic Name | 류영서 | |
| Date of Birth | 2002-06-13 (age 24) | |
| Zodiac | Gemini | |
| Country of Birth | South Korea | |
| Related Artists | Bae173 - Vocal A SIX | |
| Original group | Bae173 | |
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