MJ  (Astro 아스트로)
MJ (Astro)
  Professional Stats

  Stage Name: MJ

  Hangul 엠제이

  Position: Vocal

  Tag Category: Astro

  Debut Age: 22

  Agency: Fantagio


  Active for 2 years

  Idol Status Active

  Idol Status Original

  Personal Stats
  Birth Name: Kim Myungjun

  Hangul: 김명준


  Age: 24 years old

  Year of the: Dog

  Star Sign: Pisces

  Blood Type O

  Gender: Male

  Height: 175 cm or 5'9"


  About MJ  엠제이

MJ 엠제이 is the main vocalist of Astro.

He was born Kim Myungjun 김명준 on March 5, 1994.  He’s a Pisces and he was born in the Chinese Year of the Dog.

MJ’s birthplace of Suwon, Gyeonggi Province, is two hours south west of Seoul and thirty minutes north of Busan.

At 175 cm tall, MJ is the second tallest in the group and is the same height as Monsta X’s Shownu, VIXX’s Ken, Infinite’s Sungyeol, and more. Click his height on the personal stats chart to see a list of idols who share his height.

Blood type O is said to have a feisty personality, but MJ thinks his personality is more like an A blood type because he never loses his cool.

Nicknamed “The Happy Virus,” MJ has a mischievous personality, jokes a lot, and is always laughing. The members love his energy.

MJ was a contestant on 2012 JYP Ent. x HUM Audition where he won a one-year scholarship from Seoul National University.


  • His nickname is “The Happy Virus” because he’s always laughing.
  • He jokes a lot and is mischievous.
  • Contestant of 2012 JYP Ent. x HUM Audition (won a one-year scholarship from Seoul National University)
  • Auditioned for JYP Ent. with iKON's Donghyuk, Yang Hongseok, and the actor Kim Jisoo.
  • In 2015 he appeared in Fantagio's web drama 투비컨티뉴드 “To Be Continued”
  • His favorite colors are mint and yellow.
  • His favorite Marvel character is Iron Man.
  • His shoe size is 255.
  • His hobby is drawing.
  • Moonbin said that MJ is a little bit weird with a 4-D personality.
  • His role model is actor & singer Lee Seunggi.
  • Four members of Astro were born in March: MJ, Jin Jin, Eunwoo, and Sanha.
  • The oldest member of the group, MJ debuted in Astro at age twenty-two, while the maknae, Sanha, debuted at age seventeen.
  • The age gap between MJ and maknae Sanha is 6 years and 17 days.
  • MJ, Jin Jin, and Rocky are all under the zodiac star sign Pisces.