|Full Name||Hong Seongjun | 홍성준|
|Born||March 14, 1999|
|Hometown||Bundang-gu, Seongnam, Gyeonggi-do, South Korea|
|Height||175cm | 5′-09″|
|Family||Mother, Father, Older Brother, Older Sister|
|Education||Bundang High School|
|Years Active||2019 – present|
|Position||Lead Vocalist, Lead Dancer|
Hong Seongjun Facts
- He finished in 51st place in Produce X 101.
- Hobbies: workout, playing games, watching movies, hanging out with friends
- Specialties: guitar, topline
- He hates bugs.
- He sneezes when he looks at the sun.
- Role Model: Yook Sungjae (BTOB)
- He does not like eggplant.
- He does not like doing things alone.
- Hongsi (soft persimmon)
- Hongsam (ginseng)
- Animal: dogs
- Colors: purple, black, yellow, light blue
- Food: seafood
- Fruits: melons, strawberries
- Season of the Year: spring
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