YeoJin (Hangul: 여진) is the fourth revealed member of LOOΠΔ as well as the maknae.
She was born as Im Yeo Jin (Hangul: 임여진) on November 11, 2002, in Suseong District, Daegu, South Korea.
She debuted on January 4, 2017 as a member and subsequently released her solo single album "YeoJin" on January 16, 2017.
- Stage Name: YeoJin (여진)
- Birth Name: Im Yeo Jin (임여진)
- Nickname(s): Lentil Bean/Bean (렌틸콩/콩), Bun, Aromi (아로미), Jin (진)
- Birth date: November 11, 2002 (age 16)
- Horoscope: Scorpio
- Blood type: B
- Birth place: Suseong District, Daegu Metropolitan City, South Korea
- Current residence: LOOΠΔ Dormitory, Seoul, South Korea
- Roommates: HeeJin, HyunJin, HaSeul, ViVi, Kim Lip, JinSoul
- Family: Parents (only child)
- Body statistics: 155 cm (height), 40 kg (weight)
- Education: Deok Hwa Middle School, Hansung Girls' Junior High School, Jeong Hwa Girls' Commercial High School
- Languages: Korean (fluent)
- Position: Vocal, Rapper
- Instruments: Unknown
- Hobbies: Laying Down, sleeping, playing around
- Likes: Sleeping and laying down, people around her, Orbits
- Dislikes: Waking up in the morning, beans, school
- Personality: Carefree, energetic, cute, comical, talkative
- "YeoJin" (2017)
|2017||Do You Remember The First Time We Met?||YouTube||YeoJin (Minor)|
|Do You Remember The First Time We Met? 2||YouTube|
|2018||Do You Remember The First Time We Met? 3||YouTube|
Music Video AppearancesEdit
|2017||"Everyday I Love You (feat. HaSeul)"||ViVi||Minor|
|"Love Cherry Motion"||Choerry||Minor|
- YeoJin auditioned with the song called "Into the New World" by Girls' Generation.
- YeoJin dorms with the members of ODD EYE CIRCLE (Kim Lip, JinSoul, Choerry) and LOONA 1/3 (HeeJin, HyunJin, HaSeul, ViVi).
- YeoJin is the maknae in LOONA.
- She is the shortest member in the group. (5 ft,0)
- Her zodiac sign is Scorpio.
- She is represented by a frog and the color orange.
- YeoJin is the fourth member to be revealed on January 2017.
- She released her solo single "YeoJin" on January 16, 2017.
- While she happens to represent the "/" in LOONA 1/3, she is not a member of the sub-unit, being a sub-unit all by herself [Confirmed during a celuv.tv segment on September 17, 2018
- One of her nicknames, as called by HaSeul, is 똥글이 ("ddonggeulee", roughly meaning "Roundy", as in a circle).
- They also call her "Jjokomi" (cute way to say a small thing). 
- Her role model is the Kpop girl group S.E.S.
- She recited the poem ‘Adolescence’ by Park Sang Soo for her weekly poem 6.
- Yeojin is the only member out of the whole group to not be in an official sub-unit.
- According to her dorm mates, she is the loudest in the dorm.
- Her mom and her aunt are twins.
- Her father has muscular arms and work out a lot but still has a belly.
- She met HaSeul and Choerry at her audition.
- She raises pet snails. One of them, named 'Kilchi', passed away. It was red.
- She has a moss ball named 'Marimo' (?)
- She considers herself the group's troublemaker.
- She'd go with LOONA on vacation to all the countries where they filmed music videos. As they were busy filming and never got a chance to get a detailed look in the surrounding areas, she said she would like to revisit. 
- If she wasn't the maknae, she would want to be older than all other 11 members.