- Was a participant on Produce 101. She placed 20th in the last episode.
- Joined Unpretty Rapstar 3. She placed 3rd.
- Her hobby is watching anime (she especially likes "One Piece").
- Soyeon likes tangerines and corn and hates vegetables. ("Let's Dance: (G)I-DLE - LATATA")
- Known for her rapping skills.
- Also a good singer. She was praised for her singing while recording for a mission in PD101.
- Ranked Class A in the Company evaluation and A in the Pick Me Up Re-evaluation in PD101.
- Fans know her for being a short unnie because of her height difference with the other younger Cube trainees.
- Trained for 1 year and 6 months before joining PD101.
- Cheetah was impressed by her on Produce 101, especially when she wrote her own raps for songs.
- Soyeon signed a contract with CUBE around December 2016.
- Vaguely introduced CUBE's new girl group in "IDLE SONG" MV - First debuted as a solo-artist on November 5, 2017 with her digital single "JELLY" which was written, composed and arranged by herself. She had 1 comeback.
- Introduced in CUBE TREE
- CUBE confirmed that she will re-debut in their new girl group which will debut in 2018.
- Soyeon was homeschooled as a child.
- Soyeon used to dream of being a ninja.
- Soyeon used to do ballet.
- She said that during childhood she wanted to become a pirate, and after watching "Naruto" she wanted to become a ninja. XD
- Specialty: Rap, Dance
- Participated in composing the songs in their debut album 'I AM'
- Favorite color is Yellow
- Loves Mint Chocolate
- Audition piece: G-Dragon's This Love
- Likes tangerines & corn but hates vegetables
- Big Bang inspired her to be an artist
- Miyeon, Minnie, Soyeon & Yuqi are roommates
-Considered as Mother of Songs as she wrote their group's songs and b-sides.
- She composed their song "LION" for Queendom.
-Her idol is C Jamm, Show Me the Money Season 5 2nd. placer.
-Participated with Miyeon on League of Legends 2018 Opening Ceremony as Akali. Miyeon was Ahri. (K/Da- Popstars)
-Participated again as Akali on LOL 2019 in Paris, where she garnered alot of attention. (True Damage)
- Nevies consider Soyeon as the Father of the group.
- She introduced herself as (G)I-dle's CHARISMA LEADER
