AtHeart Members Profile and Facts
AtHeart (앳하트) is a 7-member K-Pop girl group under Titan Content. The group consists of Arin, Michi, Katelyn, Bome, Seohyeon, Aurora, and Nahyun. The group began unveiling members on July 16, 2024 through the release of a teaser video including Sorin and Michi. On November 12, 2024, Katelyn, Seohyeon, and Aurora were revealed. On February 19, 2025, Arin, Bome, and Nahyun were revealed. Subsequently, Sorin was presumed to have officially left the group after her Instagram account was deleted, following months of inactivity, and her departure was later confirmed by a Teen Vogue article. The members all have their own social media accounts to be able to share their unique personalities with their fans. The group released their pre-debut single “GOODGIRL ATHEART” on March 14, 2025. They officially debuted on August 13, 2025 with their album Plot Twist.
Group Name Meaning: “AtHeart” combines the signal of ‘heart’, which represents the mind, heart, and love, with the meaning of ‘at’, which signifies connection. It embodies the idea of connecting with the hearts of fans around the world, communicating and growing together, and creating a new world.
Official Greeting: “Aim your heart! Hello, we are AtHeart.”
AtHeart Official Logo:
Latest Dorm Arrangement (updated in May 2025):
Room “M2B”: Bome, Michi, & Seohyeon
Room “PEANUT BUTTER”: Aurora & Nahyun
Room “RINLYN”: Arin & Katelyn
Official SNS:
Website: atheart.me
Instagram: @atheart.titan
X: @atheart_titan
Facebook: atheart.me
TikTok: @atheart.titan
Youtube: AtHeart_TITAN
Weibo: @AtHeart_Official
Douyin: AtHeart_Official
BiliBili: AtHeart_TITAN
Xiaohongshu: AtHeart_TITAN
AtHeart Member Profiles:
Arin
Stage Name: Arin (아린)
Birth Name: Lee Arin (이아린)
Position(s): Leader, main dancer
Birthdate: July 1, 2007
Zodiac Sign: Cancer
Chinese Zodiac Sign: Pig
Height: 164 cm (5’4.5″)
Weight: N/A
Blood Type: N/A
MBTI Type: ISFJ
Nationality: Korean
Instagram: @arinatheart
TikTok: @arinatheart
Representative Emoji: 🩵 (Light blue heart)
Arin Facts:
– She is from Wonju, South Korea.
– Her motto is: “Let’s make the best of one life, we live and do everything we’ve wanted to do.”
– Her nickname is Ah-Rong (아롱).
– Her favorite color is black.
– Her original dream was to become a professional dancer, but she became an idol because she realized it was the best way to share her talents and to connect with others.
– Her mom has been her biggest inspiration since she was young because of her support and encouragement.
– Her biggest strength as a performer is her dancing.
– She loves to come up with her own choreography.
– She is considered to be the performance leader in the group because she has danced for so long.
– She likes shopping and collecting shoes and hats.
– She loves going to the Hangang River.
– She has a pet Maltese named Lee Bom, the same as member Bome’s birth name.
– Her unexpected charm is that she falls asleep as soon as her head hits the pillow.
– Her grandmother wanted her name to be Bruce Lee (이소룡).
– She currently attends Hanlim Multi Art School in the practical dance department.
Michi
Stage Name: Michi (미치)
Birth Name: N/A
Position(s): N/A
Birthdate: May 6, 2007
Zodiac Sign: Taurus
Chinese Zodiac Sign: Pig
Height: 174 cm (5’8.5″)
Weight: N/A
Blood Type: N/A
MBTI Type: ENTJ
Nationality: Japanese-American
Instagram: @michiatheart
TikTok: @michiatheart
Representative Emoji: 🩷 (Pink heart)
Michi Facts:
– She is from Honolulu, Hawaii.
– She loves giraffes.
– Her motto is: “Never give up.”
– Her favorite season is spring.
– Her hobbies include music, art, playing the guitar, baking, gardening, and collecting accessories.
– She has an older sister.
– She has a pet bird named Airplane.
– She can speak English and Japanese, and is learning Korean.
– Her favorite color is pink.
– She used to do K-pop dance covers with her friends at school.
– Her biggest influences in music currently are NewJeans and PinkPantheress.
– Her greatest strength as a performer is her passion for what she does.
– Her nickname among the members is Kim Michi (김미치), as she speaks Korean very well.
– She likes to bake banana bread and cook spam musubi for her members.
– She is good at drawing.
– She can do hula dancing.
– Her first musical role was being an oompa loompa.
– Michi likes to do pilates, even while brushing her teeth.
– Michi has an American driver’s license.
Katelyn
Stage Name: Katelyn (케이틀린)
Birth Name: Katelyn Angela Ejercito Tan
Position(s): N/A
Birthdate: July 24, 2007
Zodiac Sign: Leo
Chinese Zodiac Sign: Pig
Height: 162 cm (5’4″)
Weight: N/A
Blood Type: N/A
MBTI Type: INFJ
Nationality: Filipina
Instagram: @katelynatheart
TikTok: @katelynatheart
Representative Emoji: ❤️ (Red heart)
Katelyn Facts:
– She is from Manila, Philippines
– Her family is her biggest inspiration, it consists of herself, her parents, 6 siblings, and 20 dogs.
– Her charm is either her smile or her eyes.
– She loves singing and dancing.
– Her nickname is Keke.
– Her wishlist includes: sky diving, learning how to ride a horse, learning how to ski, watching a hockey game, have a sold-out concert, visiting her hometown with her members, having a concert in the Philippines’ Philippine arena, and to perfom on the biggest stage.
– She can speak English, Tagalog, and Korean.
– Some of her hobbies include boxing, watching movies, riding horses, crocheting and ice skating.
– She likes comfortable street fashion that is suitable for dancing.
– She likes reading books.
– She became interested in volleyball after watching the anime Haikyuu!!.
– Her motto is: “She believed she could, so she did.”
– She is a fan of BTS and they are one of her biggest inspirations.
– Her favorite color is purple.
– Katelyn is half Filipina and half Chinese.
Show more facts about Katelyn…
Bome
Stage Name: Bome (봄)
Birth Name: Lee Bom (이봄)
Position(s): Main vocalist
Birthdate: November 26, 2007
Zodiac Sign: Sagittarius
Chinese Zodiac Sign: Pig
Height: 166 cm (5’5″)
Weight: N/A
Blood Type: N/A
MBTI Type: ISFJ
Nationality: Korean
Instagram: @bomeatheart
TikTok: @bomeatheart
Representative Emoji: 💟 (Heart inside box)
Bome Facts:
– She is from Geochang, South Korea.
– She used to train at Mudoctor Academy.
– Her name means “spring” in Korean.
– Her motto is: “One good deed a day.”
– Her nickname is BomBom (봄봄).
– Her favorite colors are neutral colors.
– She has been performing on stage since elementary school in the choir, and later joined the band in middle school and high school.
– Seeing the crowd’s energy and applause made her want to become an idol.
– Some of her biggest influences growing up were her older sister, 2NE1, and Taeyeon.
– Her and her older sister have a large age gap, so her sister was the one to introduce her to K-Pop when she was young.
– Before wanting to become an idol, she wanted to become an SFX makeup artist.
– She is considered to be the leader when AtHeart appears on variety shows as she sets the mood among the members.
– She likes to watch animated movies.
– Her unexpected charm is that she is a meme expert.
– She is good at doing impressions.
– She does not like mint chocolate.
Seohyeon
Stage Name: Seohyeon (서현)
Birth Name: Moon Seohyeon (문서현)
Position(s): N/A
Birthdate: September 12, 2008
Zodiac Sign: Virgo
Chinese Zodiac Sign: Rat
Height: 162 cm (5’4″)
Weight: N/A
Blood Type: N/A
MBTI Type: ISTP
Nationality: Korean
Instagram: @seohyeonatheart
TikTok: @seohyeonatheart
Representative Emoji: 💜 (Purple heart)
Seohyeon Facts:
– She is from Taean, South Korea.
– Since elementary school, she dreamed of becoming an idol.
– She has been learning dance since she was 5 years old, which she thinks influenced her dream of being an idol.
– She loves meat and buldak noodles.
– She really loves spicy foods and carries buldak sauce around.
– Her wishlist includes: gifting the members clothing that suits their style, taking a family trip abroad, going camping and enjoying a cozy bonfire, having a pajama party with the members, and picking up a new hobby.
– Her motto is: “No doubt, everything will work out.”
– She has a captivating vocal tone.
– The members gave her the nickname Elementary school kid (초딩).
– Her biggest strength as a performer is the atmosphere she creates and her charm.
– Her favorite color is purple.
– She likes cute dolls and keyrings.
– She is good at playing claw machines.
– Her biggest influences in K-Pop are TWICE and BLACKPINK.
Nahyun
Stage Name: Nahyun (나현)
Birth Name: Kim Nahyun (김나현)
Position(s): Maknae
Birthdate: September 3, 2009
Zodiac Sign: Virgo
Chinese Zodiac Sign: Ox
Height: 172 cm (5’8″)
Weight: N/A
Blood Type: N/A
MBTI Type: ISTP
Nationality: Korean
Instagram: @nahyunatheart
TikTok: @nahyunatheart
Representative Emoji: 💛 (Yellow heart)
Nahyun Facts:
– She is from Cheongju, South Korea.
– She is a former SM Entertainment trainee.
– Her motto is: “Don’t be negative and always smile.”
– Her favorite color is blue.
– Being an idol was her ultimate dream when she was younger.
– Her biggest influence is Jang Wonyoung from IVE. She has been a fan of hers since Produce 48, and even cast a vote for her.
– Her biggest strength as a performer is the energy and performance she brings to the stage.
– Her nickname is HamKick (햄킥이) because her favorite emoticon to use is a kicking hamster.
– She enjoys watching kitten videos.
– Her unexpected charm is that she really enjoys snacks and trying new ones.
– Her favorite candy is mychew.
Member On Hiatus:
Aurora
Stage Name: Aurora (아우로라)
Birth Name: N/A
Position(s): N/A
Birthdate: July 4, 2009
Zodiac Sign: Cancer
Chinese Zodiac Sign: Ox
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: ENFP
Nationality: Japanese
Instagram: @auroraatheart
TikTok: @auroraatheart
Representative Emoji: 🧡 (Orange heart)
Aurora Facts:
– She is from Tokyo, Japan.
– She started to love K-Pop when she was 5 years old after seeing KARA’s concert.
– She began studying Korean when she was 7, and she can speak Japanese and English as well.
– She wants to be someone who can move others.
– Her nicknames are Auchan (아오짱) and Tomato Princess.
– Her charm is the mole next to her eye.
– She loves tomatoes.
– Her wishlist includes: eating yakiniku in Japan, playing the werewolf game on family vacation, going on a date with her mother, playing with her favorite school friends and teacher, going on a world tour, and seeing the aurora borealis in Iceland with her members.
– Her motto is: “The more the rice grain ripens, the lower its head bows.”
– She is described as having bright, positive energy, and incredible vocal and dance skills.
– Her favorite color is white.
– She has an older brother who she also considers as one of her biggest influences growing up.
– She is a fan of BTS, BLACKPINK, and Olivia Rodrigo.
– Her strength as a performer is her clear and refreshing husky voice.
– On July 2, 2025 it was announced that Aurora is taking a hiatus, due to health-related reasons.
Former Member:
Sorin
Stage Name: Sorin (소린)
Birth Name: N/A
Position(s): N/A
Birthdate: July 9, 2007
Zodiac Sign: Cancer
Chinese Zodiac Sign: Pig
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: ENTJ
Nationality: Korean
Instagram: @sorinatheart (deactivated)
Sorin Facts:
– She is from Sokcho, South Korea.
– Her charm is her calmness.
– She loves puppies, and her hobby is petting dogs.
– Her motto is: “Don’t be swayed by emotions.”
– Her favorite season is fall.
– Her favorite food is tteokbokki.
– She has an older sister.
– She can speak Korean and is learning English.
– Her favorite color is green.
– She started thinking about becoming an idol when she was 15.
– After dancing for a large audience and feeling their support, she decided to try becoming an idol.
– The artists that influenced her the most are BLACKPINK and DPR LIVE
– Her greatest strength as a performer is her unique charisma and energy.
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Note 2: Source for AtHeart‘s new dorm arrangement.
Note 3 (Positions):
– Bome was confirmed to be the main vocalist at their ‘Plot Twist’ Debut Showcase (August 13, 2025).
– Arin was confirmed to be the main dancer on the Idol DKDK Club (August 17, 2025).
– Arin was confirmed to be the leader of the group during their interview with THE BUZZ (November 12, 2025).
Made by: Ttalgis ♥
Special thanks to: Brightliliz, Tracy, kimmy, fearnot, Jewelya, and Xeko Cuong ♥
Related: AtHeart: Who is Who?
Latest Official Release:
Who is your AtHeart bias? Do you know more facts about them? Feel free to comment below. 🙂
