fans love
MJ Astro - Biography, Profile, Facts, and Career

MJ first made way into the entertainment industry by participating in 2012 JYP Entertainment X HUM Audition.

He managed to win one year scholarship from Seoul National University. Later on, he auditioned for JYP Entertainment but didn’t pass.

The man from Suwon eventually joined entertainment company Fantagio. He was part of their talent development program called iTeen.

In 2015, MJ and 5 other iTeen Boys starred in web series To be Continued. These boys were going to be members of new boy band ASTRO.

MJ and the other ASTRO members also took part in reality show ASTRO OK! Ready. The show aired in January 2016.

After their reality show, this K-pop star finally made his debut with ASTRO on February 2016. The group released their debut EP Spring Up.

It debuted at number four on Gaon Album Chart and number six on Billboard World Albums Chart.

MJ got his first number 1 with ASTRO in 2017. It was for their fourth EP Dream Part. 01. Other than peaking on top of Gaon Album Chart, the EP also got to number six on World Albums Chart.

He had his first solo stage during The 2nd ASTROAD To Seoul Starlight concert. He performed a trot song titled CHEOK CHEOK ( Don’t Do It). His performance became part of the concert DVD, released on June 2019.

Other than being in ASTRO, MJ is also part of project trot group Super Five. The group was put together through MBC reality show Favorite Entertainment.

In Super Five, MJ used his real name Kim Myung Jun. He joined A.cian’s Chu Hyeok-jin, Pentagon’s Lee Hoe-taek, Ok Jin-wook, and Park Hyeong-seok. They have released a digital single Hello on August 2020.


  • Real Name: Kim Myung Jun (김명준)
  • Stage Name: MJ (엠제이)
  • Nickname: Happy Virus, Smile Engine
  • Birthday: March 5, 1994
  • Birthplace: Suwon, Gyeonggi, South Korea
  • Zodiac Sign: Pisces
  • Nationality: Korean
  • Position: Main Vocalist (ASTRO)
  • Sub-Unit: –
  • Height: 175 cm (5’9″)
  • Weight: 58 kg (128 lbs)
  • Blood Type: O
  • Religion: –
  • Profession: Singer
  • Education: Seoul National University
  • Hobbies: Drawing
  • Parents: –
  • Sibling: –
  • Girlfriend: –
  • Facebook: –
  • Twitter: –
  • Instagram: @mj_7.7.7
  • Tiktok: @astro_mj777
  • Youtube: –
  • Weibo: ASTRO_MJ


  • MJ got the nickname Happy Virus because he smiles a lot.
  • He can speak English.
  • He is someone that would make lots of joke and a bit mischievous.
  • This Pisces man is especially good at making lame jokes.
  • He loves the color yellow and mint.
  • His favorite Marvel’s character is Iron Man.
  • He wears shoes in 255mm size.
  • He is quite good at impersonating the likes of Ha Dongyun, Park Jaebum, Lee Saedol, and many more.
  • This talented singer can also do animals impersonation, such as chicken and camel.
  • He loves eating seafood.
  • He would like to open a sushi restaurant someday.
  • MJ looks up to Lee Seung-Gi.
  • Out of all the ASTRO members, he is the one who talks the most.
  • He likes his soft belly and won’t change it to abs.
  • The first person MJ became close with is Sanha.
  • He is also friends with Xiheon from MYTEEN.
  • He used to dream of becoming an architect but gave it up because too much studying required.
  • This K-pop idol would like to be an architectural designer if he’s not in ASTRO.
  • According to Moobin, MJ can be a little weird.
  • He would date himself if he was born a girl.
  • His roommates are Sanha and Rocky.
  • He was in the 2020 musical Everybody’s Talking About Jamie, as Jamie.
  • He was involved in composing the song Bloom out of their first studio album All Light.
  • His ideal type is someone with a nice smile who has a good sense of humor like him.

See Full ASTRO Members

Pics of MJ

1. MJ looks cool in denim

MJ Astro - Biography, Profile, Facts, and Career

2. Soft colors suit him really well

MJ Astro - Biography, Profile, Facts, and Career

3. He can also pull off a badass look

MJ Astro - Biography, Profile, Facts, and Career

4. A bit of close-up to appreciate his handsome face

Astro Member - Biography, Profile, Facts, and Career

5. MJ spent his day by the sea, looking like a model

Astro Member - Biography, Profile, Facts, and Career

MJ has had quite an amazing career with ASTRO. From here on out, he for sure will gain even more success.