Sha Wujing
In Season 1, Lee Seung Gi plays Tang Sanzang (a Buddhist monk in the novel) who leads and worries constantly about the monsters hyungs (his co-cast members) who don't listen to him. Lee Soo Geun plays Sun Wukong a monkey character with the greatest sin, Eun Ji Won plays Sha Wujing (a celestial being) who is either immature or genius villain, and Kang Ho Dong plays Zhu Bajie (a pig character) with low brain power but great strength and appetite. Together, they take a journey to the west (Xi'an, China) while completing various mission to find seven dragon balls which can grant wishes for those who can collect them.