|Origin||Seoul, South Korea|
|Labels||Nega Network (South Korea)|
|Associated acts||Lunafly, Brown Eyed Girls|
LC9 (Korean: 엘씨나인) is a South Korean pop boy band formed by Nega Network. The group initially consisted of six members until member E.Den left to pursue his studies. The group currently consists of five members. Their name, LC9, means League of Competition #9. They debuted on May 9, 2013 with "MaMa Beat" on Mnet M! Countdown. The music video was released on the same day.
Around April, Nega Network announced that they would be debuting a male group, currently nicknamed Brown Eyed Boys inspired by their fellow label seniors Brown Eyed Girls. After a series of teasers introducing each of the members, they made their official debut as LC9 on May 9, 2013 with their first mini album Skirmish, with the title track "MaMa Beat" featuring label-mate Gain. On the same day, LC9 held their debut stage on Mnet M! Countdown.
- Rasa (Park Gun-woo 박건우) - leader, vocals, rapper
- J-Hyo (Kim Jong-hyo 김종효) - lead vocals, rapper
- King (Dong Woo-seok 동우석) - main vocals
- Jun (Park Jun-young 박준영) - main rapper
- AO (Kang Hyun-su 강현수) - vocals, lead rapper 
- E.Den (Park Hyung-jin 박형진) - main rapper
- Their official fanclub name is Love Beat.
- E.Den was born in Korea but when he was 5, his family moved to Canada. He was raised there and his International name is Carlos, but he changed it to Jaedyn later. He was an ulzzang before.
- E.Den left the group and moved back to Canada to study.
- Rasa is currently fulfilling his military service.
|Title||Year||Peak chart positions||Sales||Album|
|"MaMa Beat (feat. Gain)"||2013||86||46,374 (digital)||Skirmish|
|2013||"MaMa Beat (feat. Gain)"||4:03|
|"MaMa Beat (feat. Gain) (Dance ver.)"||3:23|
|"Just A Dream (Cover of Nelly)"||4:05|
|"What Makes You Beautiful (Cover of One Direction)"||3:22|
|2014||"East of Eden"||3:39|
Music video appearances
|"One Summer Night"||Brown Eyed Girls||E.Den|
|2013||"Call My Name"||Lee Yu Rim||J-Hyo|
- "LC9 Reveals Last Member E.Den – 2011 Soompi Ullzzang Winner". soompi.com. May 8, 2013. Retrieved 2013-05-19.
- "'Brown Eyed Boys', New Artist_9 reveal full debut teaser". April 23, 2013. Retrieved 2013-06-30.
- "Rookie Group LC9 Unveils Violent and Bloody MV for "Mama Beat"". soompi.com. May 8, 2013. Retrieved 2013-05-19.
- "LC9 Profile". Nega Network Official Website. Retrieved July 30, 2014.
- "LC9 International Answered Questions". LC9 International. Retrieved September 26, 2013.
- "LC9 International Answered Questions". LC9 International Admin V. Retrieved September 26, 2013.
- "Gaon Monthly Albums Chart" (in Korean). Gaon. Retrieved June 6, 2013.