Super Junior is a popular South Korean idol group. Formed in 2005 by producer Lee Soo-man of SM Entertainment, the group comprised a total of thirteen members at its peak. Super Junior originally debuted with twelve members, consisting of leader Leeteuk, Heechul, Han Geng, Yesung, Kangin, Shindong, Sungmin, Eunhyuk, Siwon, Donghae, Ryeowook and Kibum. Kyuhyun joined the group in 2006. In December 2009, Hankyung departed from the group after filing a lawsuit against their agency SM Entertainment. Hankyung subsequently won the lawsuit in December 2010, though his departure from Super Junior was not made official until September 27, 2011, when S.M. Entertainment finally released a statement to that effect. Heechul enlisted for his mandatory military service on September 1, 2011. Kangin was absent from the group for their fourth and fifth album promotions, but completed his service in April 2012, and rejoined the group for their sixth album in mid 2012, however, the absent three members are considered as part of the group regardless. As of 2012, Super Junior has ten active members: Leeteuk, Yesung, Kangin, Shindong, Sungmin, Eunhyuk, Siwon, Donghae, Ryeowook, and Kyuhyun