on SBS' Kim Heechul's Youngstreet from March 29, 2010 until mid-2011.In May 2010, he was added along with Jang Dong-min during a recording as the eighth member of the family on the series Family Outing 2, Same year he formed a project group with label mate Jungmo of TRAX called M&D (meaning "Midnight and Dawn" or "Miari and Dangae-dong", after the members' hometowns).With Super Junior on a temporary hiatus for much of 2016 due to the enlistment of four other members, he returned to hosting.In March 2016, Heechul was confirmed to become a temporary host for Weekly Idol until October 5, when Jeong Hyeong-don ended his 11-month break from television activities.In 2005 he landed his first leading role in Rainbow Romance (2005–06) then played a supporting role in Bad Family (2006)He also appeared as a radio DJ on SBS Power FM Youngstreet with Park Hee-von until mid-2006 and co-hosted SBS' weekly live music show as a substitute for Andy of Shinhwa, going on to become a permanent host with Ku Hye-sun (April 23, 2006 – February 18, 2007), Jang Keun-suk (February25 - October 7, 2007) and Song Ji-hyo (November 11, 2007 – May 4, 2008).The debut was also marked as his comeback performance after his injury from a car accident that occurred in August 2006.
Apart from Super Junior's activities, Heechul has acted in several television dramas.
That year, he return to the small screen with fantasy comedy drama Flower Grandpa Investigation Unit with Lee Soon-jae, Byun Hee-bong and Jang Gwang.
He returned to the Super Junior's line-up for the August performance at Music Bank, marking the first time he, Leeteuk and Kangin have been together in the line-up since they each completed their military service.
SKT T-Lo L invited various celebrities to join in a match against professional Lo L gamers.
The celebrity team including Heechul ultimately lost. In November 2016, Heechul began participating in SM Entertainment's League of Legends tournament 2016 S. Super Celeb League, where he and labelmate Baekhyun played the game with both professional players and fans from South Korea and China.