Lee Chang-sun (Hangul: 이창선; hanja: 李昌宣; born February 7, 1988), better known by his stage name Lee Joon (Hangul: 이준; hanja: 李準) is a South Korean idol singer, dancer, actor and model. He was a member of the Korean male group MBLAQ until the end of November, 2014 when his contract with J. Tune Camp officially ended; on December 16, 2014 it was announced that he had departed from the group and for the time being he would focus on filming his then current TV series, MBC's Mr. Back. Since early 2015 he has been signed to Prain TPC (a Prain Global company), which manages other actors such as Ryu Seung Ryong, Park Ji Young, Park Yong Woo, Yang Ik Joon, Moon Jung Hee and others.

Biographie

Lee Joon was born and raised in Seoul, South Korea. He has an older sister. He had stated that he was told by his teacher he had no talent in acting, his earlier dream, so he gave up and started dance. He in fact, before joining Seoul Arts High School had only danced for a month and won 2nd in a competition and a scholarship to Seoul Arts High School. He was not as flexible as the students who had studied dance for 10 years, but he was exceptional at choreography. He then was told once again he was not talented and was teased by other students. Lee did not give up and lived in school on week days. He went back home on weekends and practiced hard and very much. After his hard work and dedication was recognized, many more students began talking to him. He graduated from the Seoul Arts High School receiving a lot of attention. He majored in modern dance at the Korea National University of Arts and now attends Kyung Hee Cyber University.

Before Lee's debut with MBLAQ, due to his good looks, he modeled for a variety of products such as wigs, home shopping and hangover drink ads.

On November 6, 2010, during an interview, Lee revealed that he suffers from both insomnia and a severe bipolar disorder. He went on to say "[I had] suffered from insomnia before [my] debut", and that "It was fixed for a bit due to the fatigue after MBLAQ's debut, but it [had] come back recently. [He hadn't] slept for two days [that day]". Furthermore, Lee Joon revealed that the mental and physical stress induced by his busy schedule and inability to sleep was what caused his bipolar disorder.

On February 13, 2011 Lee was pulled out of filming MBLAQ's special stage for their song "Stay" at SBS's Inkigayo after he suddenly began vomiting. He was admitted to a hospital where he was diagnosed with a cochlea disorder, but it was determined that the condition was not severe. However, his activities were cancelled for a brief period of time in order for him to recover.


Awards and recognition
For Rough Play, Lee Joon won Best New Actor at the 1st Wildflower Film Awards (where he also received a Best Actor nomination). He was also nominated for Best New Actor at the 50th Baeksang Arts Awards and the 23rd Buil Film Awards in 2014.

For Heard It Through the Grapevine, he was nominated for Best New Actor (TV) at the 51st Baeksang Arts Awards and Excellence Award, Actor at the 8th Korea Drama Awards in 2015.