The 8 ICHILLIN' Members Profile: From Oldest to Youngest (2025)

ICHILLIN' profile represents a unique blend of dream, vision, and relaxed style - exactly what their name symbolizes in the K-pop industry. The group's name is a creative combination of "AISLING" (meaning dream and vision) and "CHILLIN'" (representing rest and style).

Currently composed of seven talented members - E.Ji, Jiyoon, Jackie, Joonie, Chaerin, Yeju, and Chowon - this South Korean girl group was formed under KM Entertainment. They first stepped into the spotlight on September 8, 2021, with their debut digital single "GOT'YA". The group quickly established their identity with their official fandom name "Willing".

The ICHILLIN' journey hasn't been without changes. In July 2022, the group experienced a lineup adjustment when Sohee departed. After this change, former Girls Planet 999 contestant Jiyoon joined the group, setting the stage for their comeback in November 2022 with their second digital single "Fresh". From their leader E.Ji to their maknae Chowon, each member brings unique talents that contribute to ICHILLIN's distinct presence in the K-pop landscape.

E.Ji (Leader, Main Dancer, Sub-Vocalist)

As the eldest member of ICHILLIN', E.Ji brings leadership and refined dance skills to the group's dynamic. Her journey from modern dance student to K-pop idol showcases her dedication and versatility in the competitive industry.

E.Ji profile summary

Choi Ji-won, professionally known as E.Ji, stands as the foundation of ICHILLIN' with her steady presence and artistic background. Born in Bupyeong-gu, Incheon, South Korea, she represents the group with her 163 cm (5'4") frame and distinctive personality. Before her debut, E.Ji spent considerable time developing her skills as a trainee at Fantagio Entertainment.

Her path to stardom wasn't always straightforward. Initially, E.Ji had been majoring in modern dance with plans to attend university and eventually train professionally. However, her trajectory changed after being inspired by actor Seo Kang-joon promoting a nationwide audition, leading her to leave her university dreams behind. After auditioning in 2017, she trained under Fantagio Music for approximately 3.5 years before moving to KM Entertainment.

E.Ji birthday and age

Born on November 8, 2000, E.Ji is currently 24 years old (as of 2025). As a Scorpio, her November birth places her as the oldest member of the group. This seniority naturally positioned her for leadership within ICHILLIN', though her capabilities certainly extend beyond mere age advantage.

Throughout her time with the group, E.Ji has embraced her role as the eldest, with members affectionately calling her "Ejunnie," a term combining her stage name with "unnie" (a Korean word younger females use to address older female friends or sisters).

E.Ji position in ICHILLIN'

E.Ji officially holds three positions within ICHILLIN': Leader, Main Dancer, and Sub-Vocalist. Among these roles, her position as Main Dancer particularly showcases her strengths, considering her extensive background in modern dance. Her leadership role became official when she debuted with the group's first digital single, "Got'Ya," on September 8, 2021.

Notably, E.Ji has the distinction of having the longest training period among all ICHILLIN' members, with four years of preparation before debut. This experience likely contributes to her ability to learn choreography quickly, as she and Chowon are recognized as the fastest members to master new dance routines.

On August 2, 2021, E.Ji was revealed as the third member of what would become the original ICHILLIN' lineup, which included Jackie, Joonie, Chaerin, Sohee, Yeju, and Chowon.

E.Ji MBTI and personality

According to multiple sources, E.Ji's MBTI personality type is primarily ISFJ (the Defender), though some sources also mention ISTJ or ISFP as possibilities. The ISFJ personality type generally indicates someone who is protective, loyal, and practical—traits that align well with her leadership position.

As a former student council member during high school, E.Ji demonstrated leadership qualities early in her development. Her dedication extends to improving herself for fans, as she actively practices English to better communicate with international followers.

E.Ji fun facts

Beyond her professional responsibilities, E.Ji enjoys simple pleasures in life. She owns a Maltese dog named Tori and considers her family her "first treasure".

Her food preferences reveal her taste: she enjoys rice cakes, bread, and soybean noodles. Additionally, she likes cereal, yogurt with granola (specifically with almonds, blueberries, and allulose syrup), and Iced Americano. Interestingly, she has trouble with spicy food. When it comes to dessert, her favorite Baskin Robbins flavor is Almond Bong-Bong.

E.Ji's favorite color is white, and she enjoys getting up early before work—highlighting her disciplined nature. In her entertainment choices, she favors anime series like Demon Slayer and Death Note and listens to the band DAY6. During her free time, she enjoys watching YouTube videos and chatting at cafés.

Another interesting detail about E.Ji is that she has weak eyesight, a small challenge that doesn't impede her performance abilities or determination to excel as ICHILLIN's respected leader.

Jiyoon (Main Vocalist)

Jiyoon brings exceptional vocal talent to ICHILLIN', having joined the group after gaining recognition through her participation in the survival show Girls Planet 999. Her journey from reality show contestant to established K-pop idol showcases her perseverance and dedication to music.

Jiyoon profile summary

Jeong Jiyoon (정지윤) stands as a pivotal member of ICHILLIN' under KM Entertainment. Prior to joining the group, she built her foundation as a trainee at Polaris Entertainment, where she was part of the trainee group Polaris Junior. Standing at 168-169 cm (5'6"-5'7"), Jiyoon first caught public attention through her participation in Mnet's reality survival show Girls Planet 999.

Her path to ICHILLIN' became official on October 25, 2022, when KM Entertainment announced she would join the group for their upcoming comeback. Subsequently, she made her official debut with ICHILLIN' on November 10, 2022, with the release of their single album "My Time".

Jiyoon birthday and age

Born on September 15, 2000, Jiyoon is currently 24 years old (as of 2025). As a Virgo, she embodies many of the zodiac sign's characteristic traits - meticulous attention to detail and analytical thinking. Within ICHILLIN's age hierarchy, she falls between the eldest member E.Ji and the group's maknae.

Under the Chinese zodiac, Jiyoon was born in the Year of the Dragon, often associated with strength and good fortune - qualities that have supported her throughout her career journey.

Jiyoon position in ICHILLIN'

As the Main Vocalist of ICHILLIN', Jiyoon contributes significantly to the group's musical identity. Her vocal capabilities were evident even before joining the group - while competing on Girls Planet 999, her motto was "I'll enchant you with my unforgettable, unique voice!".

Beyond her official position, Jiyoon enhances the group's musical repertoire with her skill in composing chord melodies. This talent allows her to contribute creatively to ICHILLIN's music production process, adding depth to her role within the group.

Jiyoon MBTI and personality

Interestingly, Jiyoon's MBTI personality type fluctuates more than any other member in the group. While most commonly identified as an INFP, she has also been typed as ISFJ or ISTJ. This variability suggests her adaptable nature and multifaceted personality.

Some sources alternatively classify her as an ENFJ, highlighting traits such as empathic vision and high emotional intelligence. In the Enneagram system, she's typically identified as a 2w3 (The Helper/Giver), characterized as empathetic, sincere, and warm-hearted.

Jiyoon fun facts

Jiyoon's journey to becoming an idol began early - it was her dream since childhood, despite initially feeling it was "too big of a dream" for her. She successfully passed her first audition during the summer of her first year in high school.

In contrast to her aspirations, her mother initially opposed her pursuit of music, preferring she lead an ordinary life like her sisters. Despite this challenge, Jiyoon persevered, guided by her motto: "I haven't failed unless I give up!".

Furthermore, Jiyoon possesses several distinctive traits:

She's left-handed
Owns a dog named Tofu
Thinks she resembles a dolphin
Carries chapstick regularly due to confidence in her lips

Her preferences reveal her personality - she enjoys winter, favors black and white colors, loves watermelon, and has a taste for pistachio, green tea, and gelato ice cream. While walking, she often listens to Kim Feel's "Someday".

Jackie (Main Rapper, Lead Dancer)

Korean-American talent Jackie brings international flair to ICHILLIN', blending her LA roots with K-pop style as the group's standout rapper and skilled dancer. Her bicultural background adds unique dimension to the group's global appeal.

Jackie profile summary

Born as Kang Chaeyeon (강채연) or Jacqueline Kang, Jackie represents the multicultural side of ICHILLIN' under KM Entertainment. At 160 cm (5'3"), she creates a powerful presence despite her petite stature. Jackie made her first impression on fans when KM Entertainment revealed her as the third member of their upcoming girl group on August 2, 2021. This announcement set the stage for her official debut with ICHILLIN' on September 8, 2021, through their first digital single "Got'Ya".

Her path to K-pop stardom began in her hometown of Los Angeles, California. Before moving to South Korea to pursue her musical dreams, Jackie attended Beverly Hills High School. Remarkably, she won first place in the 2018 HiTeen Korea competition in Los Angeles, an achievement that parallels the Miss Korea pageant. This victory likely played a role in her eventual debut with ICHILLIN'.

Jackie birthday and age

Jackie was born on November 17, 2001, making her 23 years old (as of 2025). As a Scorpio, she embodies many traits associated with this zodiac sign. Within ICHILLIN's age hierarchy, Jackie stands as one of the middle members, contributing to the group's balanced dynamic.

Jackie position in ICHILLIN'

As the Main Rapper and Lead Dancer, Jackie fulfills crucial roles in ICHILLIN's performances. Her position showcases her strong communication skills and rhythmic talents, especially considering her bicultural background. When she lived in the United States, she went by "Jacky," which most likely inspired her current stage name.

Jackie MBTI and personality

Interestingly, Jackie's MBTI has evolved over time. While her previous result was INFP, she updated her personality type to ENTP during a live broadcast on August 25, 2023. This shift suggests personal growth and self-discovery throughout her idol journey.

According to those close to her, Jackie possesses a bubbly personality. Simultaneously, she describes herself as very shy and mentions she often lacks concentration and forgets things. This combination of traits—outgoing yet reserved—creates an intriguing duality in her character.

Jackie fun facts

Jackie's talents extend beyond rapping and dancing—she can also play the guitar. Musically, she enjoys R&B and slow ballads accompanied by guitar tunes.

Her favorite treats include strawberries and mangoes, plus she's part of the divisive mint chocolate appreciation club. For entertainment, she gravitates toward horror, action, and thriller movie genres.

Jackie and her fellow member Joonie share two notable connections: they've known each other since elementary school and both have a severe fear of heights.

She considers her family her "first treasure", highlighting the importance of her roots despite her international career. When asked about her charming point, Jackie points to her smile that shows off all her teeth—a distinctive feature that adds to her approachable image as ICHILLIN's talented rapper and dancer.

Joonie (Lead Vocalist, Sub-Rapper)

California-born Joonie brings bilingual versatility to ICHILLIN', creating a cultural bridge between Korean and international fans through her unique vocal color and engaging personality.

Joonie profile summary

Born as Park Joonhee (박준희) but later legally changed to Park Sua (박수아), Joonie represents the international side of ICHILLIN' under KM Entertainment. Standing at 165cm (5'5"), she was introduced to fans on August 4, 2021, as the sixth member of the upcoming group. Before joining ICHILLIN', Joonie honed her skills as a trainee at YG Entertainment, where she trained alongside future idols from groups like MEOVV, BABYMONSTER, and ILLIT.

Her educational background includes graduating from Crescenta Valley High School in the United States. Moreover, Joonie participated as a contestant on RAP:PUBLIC, showcasing her versatility as a performer beyond her primary vocal position.

Joonie birthday and age

Born on May 24, 2002, in Los Angeles, California, Joonie is currently 23 years old (as of 2025). As a Gemini with blood type A, she brings the characteristic adaptability of her zodiac sign to the group dynamic. Indeed, her California upbringing contributes to her unique perspective within ICHILLIN'.

Joonie position in ICHILLIN'

Joonie officially serves as ICHILLIN's Lead Vocalist and Sub-Rapper, roles that showcase her versatile musical abilities. She made her debut with the group on September 8, 2021, with their first digital single, "Got'Ya". Her role models in the industry include BLACKPINK's Lisa and (G)I-DLE's Soyeon, artists known for their strong performance skills.

Joonie MBTI and personality

Joonie's MBTI personality type fluctuates between ENFP and ENFJ, indicating her adaptable nature. Consequently, she's known for her outgoing and positive personality, earning her the affectionate nickname "teddy bear" from fellow member E.Ji due to her round eyes and face. Besides her cheerful demeanor, she describes herself as having a strong sense of responsibility, though she admits to lacking patience.

Joonie fun facts

Joonie's life outside performing reveals numerous interesting facets:

She speaks both English and Korean fluently
She has three younger brothers born in 2009, 2012, and 2019
Her hobbies include drawing, taking pictures, cooking, and listening to music
She enjoys R&B, pop, and hip-hop music genres

In addition, Joonie and Jackie have known each other since elementary school. She prefers fruits over vegetables and chocolate chip cookies over snickerdoodle cookies. Her favorite color is blue, and she particularly enjoys eating jjajangmyeon. Interestingly, she suffers from acrophobia (fear of heights), a trait she shares with fellow member Jackie.

Her favorite characters are "Rilakkuma" and "Care Bears", and she recommends the movie "Frozen". Unlike some members, Joonie isn't a homebody and prefers staying outside, reflecting her energetic personality within ICHILLIN'.

Chaerin (Main Vocalist)

Recognized for her captivating vocal color, Chaerin stands out as ICHILLIN's main vocalist despite having the shortest training period among the members. Her swift adaptation to idol life showcases her natural talent and dedication to music.

Chaerin profile summary

Park Chaerin (박채린) performs under her birth name Chaerin (채린) as a member of ICHILLIN' under KM Entertainment. Originally from Gimhae, Gyeongsangnam-do, South Korea, she made her debut with the group on September 8, 2021, through their first digital single "GOT'YA". Standing at 160 cm (5'3″), Chaerin was revealed as the fourth member of the original lineup. She completed her education at Incheon Wondang High School, balancing her studies with idol preparations.

Chaerin birthday and age

Born on March 31, 2003, Chaerin is currently 22 years old (as of 2025). As an Aries with blood type A, she embodies the characteristic determination often associated with her zodiac sign. Interestingly, she was born precisely at 11:55 PM, a detail she has shared with fans through the group's official fancafe.

Chaerin position in ICHILLIN'

As ICHILLIN's main vocalist, Chaerin brings powerful vocals to the group's performances. Remarkably, she trained for only six months before debut—the shortest training period among all members. This accomplishment underscores her natural talent and quick adaptability in the competitive K-pop industry.

Chaerin MBTI and personality

Chaerin's MBTI has evolved from ISFJ to ISFP, reflecting her journey of self-discovery throughout her idol career. Often considered the group's "mood maker", she brings positive energy to ICHILLIN's dynamic. Her cheerful disposition contributes significantly to the group's behind-the-scenes chemistry.

Chaerin fun facts

Beyond her vocal talents, Chaerin maintains several distinctive traits:

She owns a dog named Hoi, yet ironically is allergic to dog fur
Her favorite foods include yogurt (which she can eat three times daily) and Budaejjigae
For stress relief, she enjoys shooting games
Among superpowers, she'd choose flying or teleportation
She favors characters like Tweety Bird and Winnie the Pooh

Although Chaerin enjoys watching Korean dramas, she admits to disliking the autumn season, describing it as making her feel "depressed and lonely". Musically, she appreciates diverse artists, with favorite songs including Dua Lipa's "Physical" and SNSD's "The Boys". Unexpectedly, she doesn't enjoy taking photographs, a surprising trait for an idol. Her role model in the industry is EXO's Baekhyun, whose vocal techniques have influenced her performance style.

Yeju (Lead Dancer, Sub-Vocalist, Center)

With her distinctive dimples and vibrant energy, Yeju shines as ICHILLIN's visual center, bringing youthful charm and polished dance skills that quickly capture audience attention despite her relatively brief training period.

Yeju profile summary

Kim Yeju (김예주), known mononymously as Yeju, represents ICHILLIN' as one of their standout performers. Born in Wonju, Gangwon, South Korea, she navigated a relatively swift path to stardom. First, she trained at Fantagio Music before transferring to KM Entertainment, where she completed just six months of training before debut. Officially revealed as the seventh and final member of ICHILLIN' on August 4, 2021, Yeju joined the group's successful launch with their first digital single "Got'Ya" on September 8, 2021. Educationally, she graduated from Yangil Middle School, balancing her studies with her emerging career.

Yeju birthday and age

Born on September 1, 2004, Yeju is currently 20 years old (as of 2025). As a Virgo, she embodies many traits typically associated with this zodiac sign—analytical thinking and attention to detail. Correspondingly, her blood type is A, a detail often noted by Korean fans who associate blood types with personality traits.

Yeju position in ICHILLIN'

Within ICHILLIN's structure, Yeju holds three crucial positions: Lead Dancer, Sub-Vocalist, and Center. Her role as Center places her literally and figuratively at the heart of the group's performances, often highlighting her in choreography formations and promotional materials. This positioning effectively showcases her dance abilities and visual appeal simultaneously.

Yeju MBTI and personality

Regarding personality, Yeju consistently tests as an ENFP, suggesting she possesses extroverted, intuitive, feeling, and perceiving traits. In essence, she likely approaches situations with enthusiasm and creativity. Her curious nature stands as one of her self-identified personality traits. Likewise, she considers her most charming point to be her "Indian dimples" that appear when she smiles.

Yeju fun facts

Beyond her professional roles, Yeju carries several distinctive personal preferences. Primarily, her favorite colors include yellow and purple, whereas her favorite foods encompass bread and rice. Furthermore, she identifies rabbits as her favorite animals. Interestingly, she once had a puppy but had to give it up for adoption because her younger brother was allergic to it. Within ICHILLIN's living arrangements, Yeju shares a room with Jackie. During elementary school, Yeju exhibited leadership qualities, serving as her class leader—skills that continue to benefit her career path.

Chowon (Main Dancer, Sub-Vocalist, Maknae)

As ICHILLIN's youngest member, Chowon brings youthful energy and exceptional dance skills to the group, establishing herself as a standout performer despite her tender age. Her rapid choreography learning abilities and distinctive personality make her a vital component of the group's dynamic.

Chowon profile summary

Kim Chowon (김초원), performing under the stage name Chowon (초원), represents the final piece of ICHILLIN's talent puzzle under KM Entertainment. Hailing from Boryeong, Chungcheongnam-do, South Korea, she stands at 165 cm (5'5"). Throughout her educational journey, she graduated from both Daecheon Elementary School and Hannae Girls' Middle School. Currently, Chowon is preparing for her GED. Of note, she previously trained at Fantagio Entertainment before joining KM Entertainment.

Chowon birthday and age

Born on August 18, 2005, Chowon is currently 19 years old (as of 2025). Her zodiac sign is Leo, often associated with natural leadership and creative expression. Among ICHILLIN members, she holds the distinction of being the maknae—the Korean term for the youngest member.

Chowon position in ICHILLIN'

Within the group's structure, Chowon officially serves as the Main Dancer, Sub-Vocalist, and Maknae. Revealed as the second member during the group's pre-debut rollout, she officially debuted with ICHILLIN on September 8, 2021, through their digital single "Got'ya". Alongside E.Ji, she's recognized for being the fastest member to learn new choreography.

Chowon MBTI and personality

Regarding her personality type, Chowon consistently tests as an ENFJ-T, suggesting she possesses extroverted, intuitive, feeling, and judging traits with a turbulent nature. In terms of appearance, she's often described as having a "cold beauty" image, yet fellow members note her warm personality contradicts this first impression.

Chowon fun facts

Beyond her professional attributes, Chowon carries several distinctive characteristics:

Her nickname "Choraemon" stems from always having everything in her bag, similar to the cartoon character Doraemon
She considers her family her "first treasure"
She lost approximately 7 kg before debut, resulting in temporary hair loss
She consumes more fruits than any other member in the dorm
Her favorite beverage is watermelon juice
She enjoys mint chocolate, specifically choosing Mint Chocolate Chip at Baskin Robbins
She shares a room with group leader E.Ji
She prefers cats over dogs

Sohee (Former Member)

Former trainee Uhm Sohee brought her eye-catching smile to ICHILLIN' briefly before pursuing an acting career, marking an early transition in the group's evolving lineup.

Sohee profile summary

Born as Uhm Sohee (엄소희/음소희) in Yeongwol, Gangwon-do, South Korea, she initially debuted under KM Entertainment. After leaving ICHILLIN', she transitioned to MAGIQ where she currently works as an actress. Originally, Sohee was revealed as the fifth member of ICHILLIN' on August 3, 2021. First, she participated in the group's debut single "Got'Ya" on September 8, 2021. Nevertheless, her time with the group ended on July 15, 2022, after discussions with the company about her future career direction.

Sohee birthday and age

Born on January 1, 2004, Sohee is currently 21 years old (as of 2025). As a Capricorn, she embodies many traits typically associated with this zodiac sign. Concurrently, her blood type is B, a detail often noted by Korean fans.

Sohee position in ICHILLIN'

Throughout her time with ICHILLIN', Sohee held the positions of Sub-Vocalist and Sub-Dancer. Even after leaving, she maintains the distinction of being part of the original lineup that introduced the group to K-pop fans. Hence, her contributions helped establish ICHILLIN's initial sound and performance style.

Sohee MBTI and personality

Regarding personality, Sohee consistently tested as an INFJ, suggesting she possesses introverted, intuitive, feeling, and judging traits. Essentially, she considers her most charming point to be her eye smile, a feature that helped distinguish her during her time with the group.

Sohee fun facts

Beyond her professional attributes, Sohee maintains several distinctive traits:

She and Yeju were classmates before joining ICHILLIN'
Her favorite colors include light purple, light pink, and pink
She has a dog named Cookie
Her role model is actress Suzy
She enjoys eating steamed chicken, bread, and macarons