The Commander and The Ace: Kim Jong Kook and Song Ji Hyo, The Best Combi

They do not call him The Commander and her The Ace for no reason, the are indeed the best combi. It's true that the Commander is the strongest male member and The Ace the only female member among 6 other members. Their mutual relationship began when SJH asked KJK to become her sidekick in RM special episode in China. SJH asked KJK as her spy to steal the money. That showed that SJH believed in KJK to win together. Then in episode 133, the episode Actors vs Singer, KJK asked SJH to become his spy. Yes, they believe each other. They know each other, they know that they can win together (eventhough, they didn’t win).

They are the strongest team. In episode 21 they became a pair. They became the strongest chasing team. They tore the mission team’s nametags easily. Then they became a pair in episode 62, the Ace became the bandit while the Commander became her spy. And the result, they won the money. In episode that Choi Min Soo became a guest (ep. 54 if I’m not mistaken), the Commander and the Ace were in a same team with wanko hyung, they finished a mission in one try while the other team did the mission in many tries.

The best cooperation of the Commander and the Ace, I think, in episode 79. It’s Sherlock Holmes episode. They worked together to find the criminal, that’s Ji Suk Jin. The Commander found the important hints that lead them to find Ji Suk Jin as the culprit through the book. We can see the smart and intelligence Commander here. And in the end, they found the criminal and won the prize, sapphire necklace and also they’re named as ‘best detective’. Every time the PD split the group into 2 group that leaded by YJS and KJK, SJH's always on KJK's side (ep. 29 and 150) also SJH chose KJK as her team-mate on ep. 35. On episode 93, it's survival game. In the first round all members, except Gary wrote Kim jong Kook as a member who they want to eliminate first. Fortunately, KJK could survive to second round. In the second round, Song Ji Hyo was the first member who became in KJK's side. She made an alliance with KJK and succeed to eliminate Haha.

Without the Commander and the Ace, Running Man will not have ‘the brain’. They’re also known as SpartAce.
Another story about this couple. http://megawardhani.blogspot.com/2013/10/the-hidden-secret-love-story-on-running.html