X-Man is almost like a prequel to Running man. The shows share the same always funny main MC Yu Jae-suk aka. the grasshopper. The shows also have similar content which involves missions. While the contestants in Running man complete missions to win the race the contestants in X-Man compete to reveal the true X-Man in hiding. Both shows involve celebrity contestant with one to be particularly exposed - Kim Jong-kook. If you watch Running man than I am sure you know Jong-kook's ever?asting love for Yoon Eun-hye and the teasing of other contestants. Well, the ''love story'' of this two to begin in the X-Man and is especially connected to one of the missions called of course. Both shows are full of comedy and are just a joy to watch.