CHASER Members Profile and Facts
CHASER (체이서/ チェイサー) is a South Korean pre-debut boy group under HOWLING Entertainment, consisting of 6 members: Kangbin, Keisuke, Ren, Yunseong, Sihun, and Masaya. The group was first introduced on September 9, 2025, with Wooju and Seochan included in the original lineup. However, in October these two were replaced with Yunseong and Masaya, resulting in the current lineup, who were officially revealed on November 27, 2025. They released their pre-debut single “Sweet Like Sugar” on November 30, and are set to kick off pre-debut activities in Japan on December 6, 2025. Their debut date is currently unknown.
Group Name Meaning: N/A
Official Greeting: “2, 3, yes we are CHASER! Hello, we are CHASER!”
CHASER Official Fandom Name: N/A
Fandom Name Meaning: N/A
CHASER Official Color: N/A
CHASER Official Logo:
Official SNS:
Instagram: @chaser_ofcl
X: @CHASER_ofcl
TikTok: @chaserofficia1
YouTube: CHASER(체이서)
CHASER Member Profiles:
Kangbin
Stage Name: Kangbin (강빈)
Birth Name: Kim Hee Chan (김희찬)
Position(s): N/A
Birthday: August 20, 1997
Zodiac Sign: Leo
Chinese Zodiac Sign: Ox
Height: 179 cm (5’11”)
Weight: 65 kg (143 lbs)
Blood Type: A
MBTI Type: N/A
Nationality: Korean
Instagram: @k._.bin1368
Kangbin Facts:
– He’s a former member of UTH (2019-2020) as Heechan (희찬), F.ABLE (2020) as Doha (도하), and AMBITION (2022-2024) as Taeho (태호).
– He was a contestant on PROJECT 7 (2024), but got eliminated in the Zero-Setting round.
– Kangbin auditioned for Fan Pick (2023), but failed to pass the auditions.
– He’s a former member of the busking team Vierno (2018-2019).
– His role models are G-DRAGON, and BTS‘ Jimin and V.
– He has multiple tattoos on his arms.
– His special skills are aegyo, playing badminton, and mimicking anime voices.
– His hobbies include gaming, watching animations (especially Crayon Shin-Chan), shopping, working out, acting, and watching G-DRAGON clips.
– He’s a Stray Kids fan, and his bias is Hyunjin.
– His friends gave him the nickname “Heettoppi”, which means “Sulky Hee”.
– His charming point is his neck line.
– Kangbin’s favorite colors are black, white, light maroon, and any bright colors.
– His favorite number is 7.
– His favorite foods are salmon and eel.
– Kangbin’s least favorite foods are spoon worm and wasabi.
– His ideal type is a woman with cat-like features.
Keisuke
Stage Name: Keisuke (케이스케)
Birth Name: N/A
Position(s): N/A
Birthday: December 2, 2000
Zodiac Sign: Sagittarius
Chinese Zodiac Sign: Dragon
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: N/A
Nationality: Japanese
Instagram: @keisuke_222222
Keisuke Facts:
– His hobby and specialty is acrobatics.
Ren
Stage Name: Ren (렌)
Birth Name: Park Sung Jin (박성진)
Position(s): N/A
Birthday: May 1, 2001
Zodiac Sign: Taurus
Chinese Zodiac Sign: Snake
Height: 173 cm (5’8″)
Weight: 55 kg (121 lbs)
Blood Type: A
MBTI Type: ISTP
Nationality: Korean
Instagram: @hiiamrenren
Ren Facts:
– He’s a former member of HALF&HALF (2024-2025).
– He practiced taekwondo until the age of 7.
– Ren worked part-time at a shoe store before becoming an idol.
– He had dreamed of becoming an idol since he was young, and he said it took a lot of hard work to convince his parents to let him go to Japan to promote with HALF&HALF.
– His role model is SHINee‘s Taemin.
– His special skills are singing and being able to completely clear his mind and think of nothing.
– Ren’s hobby is zoning out while listening to music.
– His charming points are his laugh and eye smile.
– The animals that represent him the best are a puppy and desert fox.
– He describes himself as someone who’s fresh and cute, but easily bothered.
– He loves eating ice cream.
– Ren sleeps a lot.
– A song he enjoys is “Batter Up” by BABYMONSTER.
– His favorite words to hear are “handsome” and “cute”.
– Ren’s goal is to be loved by everyone.
Yunseong
Stage Name: Yunseong (윤성)
Birth Name: Kim Yun Seong (김윤성)
Position(s): N/A
Birthday: January 2, 2002
Zodiac Sign: Capricorn
Chinese Zodiac Sign: Snake
Height: 187 cm (6’2″)
Weight: 73 kg (160 lbs)
Blood Type: O
MBTI Type: N/A
Nationality: Korean
Instagram: @ynxn_gg
Yunseong Facts:
– He’s a former member of Kairos (2021-2022).
– Education: Howon University (K-pop Department)
Sihun
Stage Name: Sihun (시훈), formerly Eunsung (은성)
Birth Name: Kim Seung Ho (김승호)
Position(s): N/A
Birthday: July 19, 2004
Zodiac Sign: Cancer
Chinese Zodiac Sign: Monkey
Height: 178 cm (5’10″)
Weight: 63 kg (139 lbs)
Blood Type: O
MBTI Type: ENFP
Nationality: Korean
Instagram: @sihun._x719
Sihun Facts:
– He was born in Ansan, Gyeonggi Province, South Korea.
– Before CHASER was officially announced, he briefly went by the name Eunsung (은성).
– He’s a former member of CMDM (2023-2025) under his given name, SeungHo (승호).
– He trained for 1 year prior to debuting with CMDM.
– Education: Yulhyun Middle School, Sukji High School
– He was a member of a dance club called PS in high school.
– His role model is BTS‘ Jungkook.
– His special skills are martial arts (Brazilian jiu-jitsu, kickboxing), singing, sprinting, full splits, and arm wrestling.
– Sihun’s hobbies include studying English and Japanese, listening to music, watching movies and Crayon Shin-Chan, and interacting with animals.
– His favorite animal is a wolf.
– His favorite color is pink.
Masaya
Stage Name: Masaya (마사야)
Birth Name: N/A
Position(s): N/A
Birthday: June 21
Zodiac Sign: Gemini/ Cancer
Chinese Zodiac Sign: N/A
Height: 178 cm (5’10”)
Weight: N/A
Blood Type: N/A
MBTI Type: ENTP
Nationality: Japanese
Instagram: @0621_masa_0621/ @ch_masaya
TikTok: @masaya_at
Masaya Facts:
– He was added to the group in October 2025.
– He will not be participating in the group’s pre-debut promotions due to health issues.
– Masaya is a popular TikToker with 576.8k followers (as of October 2025).
– He was a backup dancer for the World of Street Woman Fighter MEGA CREW Mission and for Kocchi no Kento‘s solo live “よいとこせ”.
– He did the “Touch” Challenge with KATSEYE.
– Masaya is friends with BLACK IRIS‘ Rio, ONE-WISH‘s Takuya, MSQT‘s Seya, former DEARLAND‘s Sizu, former Kindan‘s KANDAI, Protea*‘s Hiroki, Produce 101 Japan contestant Hata Kengo, former VECTALL and #HASHTAG member Tsuzuki Yuya, former BATTLE BOYS‘ Yumiki Yamato, YouTuber CHOMAD, and more.
– He was a student at En DANCE STUDIO SHIBUYA.
– He attended 71 Dance Camp in Seoul in 2023.
– Masaya can speak some English and is learning Filipino.
– He has a helix piercing.
– His special skills include dance, vocal, rap, and acting.
– He enjoys taking photos.
– His BOYS II PLANET picks were Lee Sangwon and Anxin.
Former Pre-Debut Members:
Wooju
Stage Name: Wooju (우주)
Birth Name: Lee Woo Joong (이우중)
Position(s): N/A
Birthday: August 18, 1999
Zodiac Sign: Leo
Chinese Zodiac Sign: Rabbit
Height: 175 cm (5’9″)
Weight: 59 kg (130 lbs)
Blood Type: A
MBTI Type: ISFP-T
Nationality: Korean
Instagram: @woozu77
Wooju Facts:
– He was a member from September to October 2025. He left/ was cut from the lineup for undisclosed reasons.
– Wooju is a former member of WE US (2023-2025).
– He auditioned for Fan Pick (2023), but failed to pass the auditions.
– He trained for 4 years prior to debuting with WE US.
– His hobbies include listening to music, taking walks, and exploring new restaurants.
– His favorite color is black.
Seochan
Stage Name: Seochan (서찬)
Birth Name: N/A
Position(s): Former Maknae
Birthday: February 20, 2005
Zodiac Sign: Pisces
Chinese Zodiac Sign: Rooster
Height: 180 cm (5’11”)
Weight: 65 kg (143 lbs)
Blood Type: N/A
MBTI Type: ESFP
Nationality: Korean
Instagram: @_seo_.c
Seochan Facts:
– He was a member from September to October 2025. He left/ was cut from the lineup for undisclosed reasons.
– Seochan is a former member of ACHV/ CODE:VVID (2023) and WE US (2022-2023, re-joined 2024-2025).
– He went by the name Seungyou (승유) in ACHV/ CODE:VVID, and Seungyeon (승연) during his time in WE US from 2022 to 2023.
– He trained for 2 years prior to joining WE US.
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Latest Official Release:
Who is your CHASER bias? Do you know more facts about them? Feel free to comment below!
