Group Members

MJ (ASTRO) Profile, Bio, & Facts


MJ (엠제이) is a South Korean singer-songwriter and a member of the boy group ASTRO under Fantagio Entertainment. He debuted solo on November 3rd, 2021 with the single “Happy Virus”. He was also a member of the trot project group “Super Five”.

MJ (ASTRO) Profile

Stage NameMJ (엠제이)
Birth NameKim Myung Jun (김명준)
OccupationSinger-songwriter, Actor
BirthdayMarch 5, 1994
Active Years2016–present
Age30 (in 2024)
Zodiac SignPisces
Height175 cm (5’9″)
Weight58 kg (128 lbs)
Blood TypeO

MJ (ASTRO) Facts:

Early Life

– MJ was born in Suwon, Gyeonggi, South Korea.
– He attended Seoul Hansan Elementary School and Hansan Middle School.
– He graduated from Jinjeop High School.

Personal Life

– He is known by the nickname “Happy Virus” because he always wears a smile.
– Lee Seung Gi is his role model.
– He is a student at Global Cyber ​​University (Broadcasting Entertainment).
JinJin’s first memory of him was him singing Crush’s “Sofa” and JinJin had thought then that MJ would definitely get the main vocalist position. (Daebak Show)
– He shares his birthday with CIX‘s BX, Red Velvet‘s Yeri, Victon‘s Subin, and Cherry Bullet‘s Yuju.
– He was roommates with Rocky and Sanha.
– If it was the end of the world, he would want to see his family on the last day. (The A-Z Question)
– He would choose five Rockys over five MJs if given the choice. (Soompi TMI)
– His childhood dream was to be an architect, but he gave up due to the extensive studying required.
– If he had to choose, he would choose sleep over food.
– He got the inspiration for the song “Sunset Sky” when he went to Han River with a friend and a mini keyboard. (Daebak Show)
– If he were a girl, he would date himself.
– He believes his makeup and hair help bring him more confidence on stage. (Allure)
– He is the most talkative among all members.
– He first befriended Sanha when he joined Fantagio.
– He is friends with Kookheon from MYTEEN, Hyojin, and E-Tion from ONF.
– JinJin thinks that MJ would get a level 7 if he took the TOEIC language test. (Daebak Show)
– He thinks Rocky and JinJin are the best cooks in the group. (Esquire Korea)
– MJ’s ideal type is a girl with a nice smile, a good sense of humor, and someone similar to him.
Moonbin said MJ would survive the longest in a zombie apocalypse. (Pop Crave Exclusive)
– His life motto is “Think positively.”
– He thinks he and Sanha are the moodmakers in ASTRO.
– He feels the happiest when he is driving or on vacation with his family. (Hallyupia)
– A person he would want to go back to and talk to is Micheal Jackson and show him his fancam, asking if he is doing well. (ELLE Korea)


– MJ is the main vocalist in ASTRO.
– In 2012, he took part in the JYP Ent. X HUM Audition and earned a one-year scholarship from Seoul National University.
– He auditioned for JYP Entertainment alongside iKON‘s DK, Pentagon‘s Hongseok, and actor Kim Jisoo.
– He was cast as Jamie in the musical “Everybody’s Talking About Jamie” in 2020.
– He co-composed the song “Bloom,” one of the tracks on their 1st full album “All Light,” alongside Jinjin.
– In 2020, he debuted in the trot idol group Super Five through MBC’s reality show Favorite Entertainment.
– He has appeared in dramas like “Find Me If You Can”, “Soul Plate”, and “To Be Continued”.
– He is the first member of the group to make a solo debut with his first digital album “Happy Virus” consisting of two songs “Get Set Yo”, a trot song featuring Kim Tae Yoon and Valet Parking. (Korea JoongAng Daily)
– The inspiration for writing “Gemini”, a track on their 2nd album “All Yours” came to him by thinking about his past. (KStation TV)
– He composed and wrote the lyrics for the song “Sunset Sky”. (Daebak Show)
– He went on hiatus since he began his military service on May 9, 2022, and returned on November 8, 2023.

Likes & Dislikes

– He likes movies more than dramas. (Soompi Soulmate)
– His favorite season is fall.
– The subject he liked the most in school is English. (Guess My Answer)
– His favorite words to hear from others are “I’m happy.”
– If MJ had to listen to one song for the rest of his life, it would be “Baby Shark”. (Soompi TMI)
– He likes window shopping and going out to eat something.
– His favorite colors are mint and yellow.
– He likes gentle emotional ballads. (Marie Claire)
– He prefers cats over dogs.

Food Preferences

– He prefers mineral water over sparkling water.
– His favorite Japanese foods include beef cutlet, sushi, udon, okonomiyaki and takoyaki. (ViVi)
– He likes mint chocolate.
– His go-to beverage at a cafe is an Iced Americano. (Soompi Soulmate)
– He would rather give up on sugar than meat. (Soompi TMI)
– His favorite delivery food is cheese donkatsu. (Esquire Korea)
– He would choose pizza over chicken.
– His favorite Japanese phrase is “How much is it?”. (Cancam)


– MJ can speak basic English and Korean.
– His special talent is making lame jokes.
– He is skilled at impersonations, imitating various personalities and animals.

Personality & Habits

– He has a humorous personality, often cracking jokes and being mischievous.
– Moonbin described him as having a slightly eccentric “4D character.”
– He said he is not good with expressing negative thoughts, worries, or concerns but he can do that easily while writing lyrics. (Singles)
– He feels the most angry when he is not allowed to do something he wants to do. (Hallyupia)
– Jinjin said that MJ is very cheerful but also the most mature among all the members and is in charge of Jinjin’s mental care. (4th Year Anniversary Interview)

Instagram: @mj_7.7.7
TikTok: @astro_mj777

Streaming Platform Links
Genie | Spotify | Bugs | Melon | Apple Music 

MJ (ASTRO) Photos

NOTE: If you know more facts, feel free to submit them in the comments section!

‘Happy Virus’ – Official MV:

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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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