Group Members

Yun (4TEN) Profile, Bio, and Facts

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Yun, now known as Heo Yoon, is a singer, actress and a former member of the group “4TEN” from South Korea under Jungle Entertainment. She debuted with the group on June 19, 2015, with their third digital single, “Go Easy”.

Stage Name: Yun (윤)
Birth Name: Heo Yoon (허윤)
Occupation: Singer, Actress
Birthday: September 23, 1994
Age 29 (in Jun 2024)
Active Years: 9
Zodiac Sign: Virgo
Height: 168 cm (5’6″)
Weight: 49kg (108 lbs)
Nationality: Korean
Blood Type: B

Yun Facts:

Early Life

– Yun was born in Guro-gu, Seoul, South Korea.
– She completed her primary education at Hongik Kindergarten and Guil Elementary School.
– She attended Guil Middle School and graduated from Dongil Girls Computer Design High School.

Personal Life

– Her family consists of her parents and older brother.
– Her specialties are nail art, acting, modern dance, and gayageum.
– She is close with DAM, a former member of I-Rex and Black Six.
– She knows how to play the Korean traditional instrument “gayageum.”
– She likes shopping, watching movies, and tidying things up in her spare time.
– Her nicknames are “Dayooni” and “Younggam.”
– She thinks her charm is appearing sharp-witted.
– Yun is friends with Yeonjoo (Oh!Bliss), Taeyoung (Black6ix), Gayoung (Stellar), and Gaeun (After School).
– She was the mom of the group.
Hyeji said that Yun is chill and laid back and doesn’t mind doing embarrassing things to make people laugh.


– Yun was the lead vocalist in the group “4TEN”.
– She became a member of 4TEN on June 19, 2015.
– She went on hiatus from group activities due to neck pain on September 11, 2016.
– She didn’t return to the group after recovering from the surgery.
– She is currently active as an actress under her birth name, Heo Yoon.
– She made her acting debut in the 2010 SBS drama Secret Garden.
– She appeared in the dramas “Dream High” (2011) and “Let’s Eat” (2013).
– In 2017, Yun made a special appearance in “Criminal Minds” episode 19.
– In 2019, she was cast in the 2019 Korean drama “Joseon Survival Period.”
– She participated in the TV show “Edge of Friendzone” in 2022.
– She is currently working as a Pilates studio representative.
– She signed an exclusive contract with Relationship Entertainment on July 8, 2019, but broke up with her agency.
– Yun is independent and is currently not signed under any agency.

Social Media Handles

Instagram: u__ni__00

Streaming Platform Links

Bugs | Melon

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Lilian Chen

Yo! I'm Lilian, an Ahgase and a curious wordsmith on a never-ending quest for knowledge. Don't hesitate to spot any slip-ups in my work and feel free to reach out with additional facts & insights! ^^

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