Question: Who was the supporting actor in Running Man?

Context articles: List of Running Man China episodes
Running Man (2013 film)
List of Running Man missions in 2012
List of Running Man missions in 2017
Oh Jung-se
List of Running Man missions in 2015
List of Running Man missions in 2011
Running Man (2015 film)
List of Running Man missions in 2014
Keep Running (TV series)

Running Man (), known internationally as Running Man China, is a Chinese variety show, broadcast on ZRTG: Zhejiang Television.
 This show is classified as a game-variety show, where the MCs and guests complete missions in a landmark to win a race.
 The show first aired on October 10, 2014.
Running Man () is a 2013 South Korean action film starring Shin Ha-kyun as an ordinary man who begins to be chased and watched by the entire nation after he is falsely accused in a homicide case.
The following is a list of missions that aired on "Running Man" in 2012 (episodes 75–126) in chronological order.
 Missions that have been modified or which are played during another mission are grouped together.
 For other details, please refer to the "List of Running Man episodes" article.
The following is a list of missions that have aired on "Running Man" in 2017 (episode 332 to present) in chronological order.
 For other details, please refer to the "List of Running Man episodes" article.
Oh Jung-se (born February 26, 1977) is a South Korean actor.
 Oh began his career in theater, and has since appeared in many onscreen supporting roles over the years, notably in "Petty Romance" (2010), "Couples" (2011), "As One" (2012), "A Millionaire On the Run" (2012), and "Running Man" (2013).
 But his performance in the 2013 romantic comedy "How to Use Guys with Secret Tips" earned him special attention from critics and viewers.
 This led to Oh being cast in his first leading role in the 2013 film "The Hero".
The following is a list of missions that have aired on "Running Man" in 2015 (episode 228–279) in chronological order.
 Missions that have been modified or which are played during another mission are grouped together.
 For other details, please refer to the "List of Running Man episodes" article.
The following is a list of missions that have aired on "Running Man" in 2011 (episode 24-74) in chronological order.
 Missions that have been modified or which are played during another mission are grouped together.
 For other details, please refer to the "List of Running Man episodes" article.
Running Man () is a 2015 Chinese reality comedy film directed by Hu Jia and Cen Junyi.
 It was released on January 30, 2015.
 It is a film adaptation of a Zhejiang Television series "Running Man".
The following is a list of missions that have aired on "Running Man" in 2014 (episode 179-227) in chronological order.
 Missions that have been modified or which are played during another mission are grouped together.
 For other details, please refer to the "List of Running Man episodes" article.
Keep Running (), previously known as Running Man () before 2017, is a Chinese variety show broadcast on ZRTG: Zhejiang Television.
 It is a spin-off from the popular original South Korean variety show "Running Man" by SBS.
 It was first aired on 10 October 2014.
 The show is classified as a game-variety show, where the MCs and guests complete missions at a landmark to win a race.