Mir was born in Bukha-myeon, Jangseong County, South Korea in the country side.

In 2011, Mir had injured himself, he had to go under a spinal disc surgery, but arrived to perform with the group after being inactive due to his injury.

During the time with MBLAQ, Mir wrote the lyrics to "You're my +" and "Can't Come Back" alongside G.O around the year 2011.

[4][5][full citation needed] In February 2012 Mir shared a picture on his Twitter of G.O working really hard on a new album (BLAQ%Ver.)

On February 21, 2010, Mir was featured on the song "Bad Person" by former member of Baby Vox Re.V, Ahn Jin Kyung.

During the same time of 2010 he collaborated with Kan Mi-youn on the song "Going Crazy" which also featured Lee Joon of MBLAQ.

K of 2PM, Park Hyung-sik of ZE:A, JB of JJ Project/Got7, and Seung Ah of Rainbow, Jei of Fiestar, Nam Ji-hyun of 4Minute, and Hyejeong of AOA.

On August 11, 2015, Mir was on the kids musical program called "The Fairies in My Arms" alongside Spica's Yang Ji-won and GFriend's Sinb as a hero who saves weak children.