Running Man

Running Man is a South Korean variety show, a part of SBS's Good Sunday lineup. It was first aired on July 11, 2010. Running Man has aired for almost 3 years, it currently has over hundred episodes and still on-going every week.Running Man filming at various famous places in Korea, such as Museum, Sports Stadium, Seoul Tower, Jeju Island, up to foreign countries like China, Hong Kong, Thailand and Vietnam.

Mission / Games
Mission or games is usually different in each episode. Mission or the game in Running Man is different in each episode, but basically consist of several games. The game is played to help members complete the main missions. but in a few episodes, there are members who get extra mission, known as spy mission.
The most commonly played game in Running Man itself is a race  mission. Usually, consists of hide and seek game and chase to remove other team name tag's.  Members who already removed his/her name tag will go to jail and stay still during the game.

Member
1. Ji Suk Jin
    Nicknames : Big Nose Older Brother, Impala
    Appear in episode 1 - present
    Ji Suk Jin is the oldest member of the show. During the race missions, he is shown to be one of the weakest member and most frequently eliminated out of the race, so the other members would declare that the race has officially started after his elimination.
2. Yoo Jae Suk
    Nicknames : Grasshoper, Yoomes Bond, Yooruce Wilis, Yoo Hyuk
    Appear in episode 1 - present
    Yoo Jae Suk is the main host of the show as known as nation mc. he is shown to have a closer relationship with a lot of the guests on the show. Although initially a weak player during the race missions, he later becomes one of the strongest players in the series, and is, along with Kim Jong Kook, considered to be one of the two main powers in the race missions.
3. Kim Jong Kook
    Nicknames : Sparta-kooks, Kookie, Commander, Coach Kook, Tiger
    Appear in episode 1 - present
    Kim Jong Kook is known as the strongest man on the show. His smart tactics are often successful to eliminate the other members and as a result, he is known for having both brains and brawn. His only apparent weakness is women.
4. Gary
    Nicknames : Peaceful Gary, Wild Gary, Monday Boyfriend
    Appear in episode 1 - present
    Gary is shown as the most gullible but honest member. Throughout the series, he has been involved in the official loveline of the show alongside Song Ji-hyo. Although shown to be quite clueless at times, he is known as "The man full of surprises" and the "dark horse" of Running Man during race missions.
5. Haha
    Nicknames : Haroro, Roro, Penguin
    Appear in episode 1 - present
    Haha is the primary joker of the cast and usually picked on by other members because of his height and his similar appearance to Pororo the Little Penguin. He was initially a weak player during the race missions, occasionally being picked on even while on the chasing team, however he has improved over the course of the show.
6. Lee Kwang Soo
    Nicknames : Giraffe, Kwang-vatar, Prince of Asia, Icon of Betrayal
    Appear in episode 1 - present
    Lee Kwang Soo is the youngest and tallest member of the cast. He is often picked on by the rest of the cast, particularly Kim Jong Kook, due to his timid nature. He is one of the weakest players, often the first to be eliminated during race missions. However, he has grown to easily betray his fellow members without concern. Due to his immense popularity when the show is filmed in other Asian countries, he has since been known as the Prince of Asia.
7. Song Ji Hyo
    Nicknames : Miss Blank, Ace, Bad Ji Hyo, Monday Girlfriend
    Appear in episode 2 - 5 (Guest); 6 - present (Member)
    Song Ji Hyo is the only current female member of the show.  During the earlier episodes, she was often known to swear during broadcasts especially towards Haha and Lee Kwang Soo. She is also known to be often seen with confused or blank facial expressions a lot of the time. Throughout the series, she has been involved in the official loveline of the show alongside Gary. She is one of the strongest players during race missions.
8. Song Joong Ki
    Nicknames : Active Young Man, Flower Joong Ki, Brain Joong Ki
    Appear in episode 1 - 41
    Song Joong Ki is shown as being the smartest and also having the best looks out of the cast. He is known for being able to figure out puzzles and strategize during the race missions. He is also shown to be very optimistic and is often seen attempting new things but ultimately failing. As of episode 41, he has left the main cast to focus on his acting career.

Guest
Running Man almost has 150 episodes. Throughout all the episodes, it cannot be denied that the guests have made an amazing impact to elevating Running Man into one of the most watched variety shows around the world. Of course, there have been both good and bad guests appearing on Running Man, but nothing is perfect.
These are all my personal opinion. I'm judging objectively based on whomever left me with the greatest impression with their performance. So don't accuse me of being biased. Among all these guests, I have spotted a number of similarities, enough to group them into different categories. Below are all the different groups of guests, along with some notable examples, who have appeared on Running Man.
 1. The Super Guest

     Examples: Jung Yong-hwa, Nichkhun, Park Ji-sung

    Super guests are able to leave a strong impression on the audience with their witty banter with the other members, while still being able to excel in almost all the games and races. Yong-hwa, current record holder for guesting the most episodes on Running Man is a clear example of a super guest. His interaction with the rest of the cast members is brilliant and he is also nicknamed "Guest Ace" because of his adaptability in the games. Park Ji-sung is another super guest; his appearance in the 3-part Park Ji-sung special giving audiences a surprising, and very funny, insight into the other side of 'Three-lung Park'.

 2. The Active Guests

     Examples: Shin Se-kyung, Choi Siwon, Choi Minho

     The active guests are those guests who do not care so much about creating laughs, but rather go for the win in every situation. Minho is one such active guest. Not only does he focus on winning every game to the best of his ability, his never-give up performance in the Winter Olympics Special put him toe-to-toe with the Commander. Shin Se-kyung is another active guest. She may seem quiet and demure on the outside, but her will to win is extremely strong. God help whoever goes against her.

 3. The Overrated Guests

     Examples: Choi Min-soo, Jackie Chan, Big Bang

     Sometimes, the more hype you put into an episode and its guest, the bigger the fall will be. Choi Min-soo was brilliant the first time he came but by the third time, the whole premise seemed incredibly scripted. Jackie Chan's episode was another huge episode. Sure it was the first time an international guest participated in the entire episode but the overall episode was only mediocre, with laughs here and there.

4.  The Cute Guests

     Examples: Shin Bong-sun, Noh Sa-yeon

     The cute guests here are referring to the guests who can bring in the laughs with their antics. In this respect, Noh Sa-yeon, the Tuna Roll, is one of the cutest guests to ever grace the show. Every single one of her appearances guarantees at least a stomachache from laughing too much. Shin Bong-sun and her preoccupation with getting the Commander's attention is also something to watch for.

 5. The Mediocre Guest

     Examples: So-hee, HyunA, Kim Woo-bin

     Sometimes, a guest comes on the show but they don't make much of an impact in terms of laughs or in terms of winning the games. These are the mediocre guests. One example is So-hee. Although she was cute as a button, she was also extremely shy and didn't really generate much conversation, more so laughs. Kim Woo-bin was another guest who was fairly mediocre. While he did try his best to win the games, he was unfortunately a little bit tight-lipped, giving off an impression of being cool, something that a variety show like Running Man doesn't really employ well.

 

Source :
http://en.wikipedia.org/wiki/Running_Man_%28TV_series%29
http://leonhart90.blogspot.com/2013/04/6-kinds-of-running-man-guests.html