TREI Members Profile and Facts:

TREI (TRiNiTiOPUS) (트레이) was a 3-member boy group under Banana Culture. The group consisted of Jaejun, Changhyun, and Juntae. They originally began as a duo (Jaejun and Changhyun) on August 28, 2017, and later became a three-member group when Juntae joined on May 17, 2018. They officially debuted on February 19, 2019, with  their first mini album, Born ; 本. On June 19, 2020, it was announced that the group had disbanded following the members’ departure from the agency.

Fandom Name: –
Official Colors: –

Official Sites:
Instagram: @trei_official

TREI Members Profile:
Jaejun

Stage Name: Jaejun (재준)
Birth Name: Lee Jaejun (이재준)
Possible Position: Leader, Main Dancer, Lead Vocal, Visual
Birthday: September 25th, 1997
Zodiac: Libra
Height: 175 cm (5’9″)
Weight: 56 kg (123 lbs)
Blood Type: A
Instagram: @jjun_0925

Lee Jaejun Facts:
– He is a former member of the group C-CLOWN under the stage name Maru.
– His nickname is JJ.
– He is a very dedicated individual.
– During his trainee days, he would ride the bus for three hours from their home to his label’s agency in Seoul to train every single day.
– His attraction is his manliness.
– His Chinese Zodiac sign is an Ox.
– He was one of the youngest K-Pop idols to debut. He debuted in C-Clown at age 15.
– He is often mistaken as a foreigner in Korea because of his looks.
– He has two sisters.
– Rain and Kikwang are his role models.
– He likes clothes with spikes and studs.
– Participated in Mixnine and made it to the final.
– He’s part of the duo JT & Marcush.

Juntae

Stage Name: Juntae (준태)
Birth Name: Kim Juntae (김준태)
Possible Position: Main Vocalist
Birthday: April 14th, 1997
Zodiac: Aries
Height: 178 cm (5’10”)
Weight: –
Blood Type: –
Instagram: @jtee_iii

Kim Juntae Facts:
– He is a strong vocalist.
– He joined the group in 2018.
– He’s part of the duo JT & Marcus.
– Juntae trained for 4 years.

Chae Chunghyun

Stage Name: Changhyun (창현)
Birth Name: Chae Changhyun (채창현)
Possible Position: Main Rapper, Maknae
Birthday: June 25th, 1998
Zodiac: Cancer
Height: –
Weight: –
Blood Type: –
Instagram: @changhyun_iii

Chae Changhyun Facts:
– His nickname is Golden Boy.
– Participated in MIXNINE and was eliminated on Episode 10.
– Changhyun doesn’t like horror movies.
– Changhyun trained for 10 years.
– He became an idol because of G-Dragon’s influence on him.
– His role model is Travis Scott.
– On June 7, 2025, he debuted as a member of the independent co-ed band Re:Hearts, under the stage name Lyle.

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(Special thanks to Chelsea Rosé & jesse, SAAY, Mrs. Choi, _minhoe, chooalte❣, Nayuki for providing additional info.)

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Who is your TREI bias? Do you know more facts about them? Feel free to comment below. 🙂