Main •
Lee Jun-ho as Kang Sang-woong : An ordinary civil servant who acquires the special ability to gain strength equivalent to the amount of cash he possesses. •
Kim Hye-jun as Kim Min-sook : Sang-woong's long-time girlfriend and fiancée. She is a realistic person who finds Sang-woong's superpower inefficient but supports him more than anyone else. •
Kim Hyang-gi as Bang Eun-mi : A young woman with telekinetic powers, which are fueled by the amount of calories she intakes. •
Kim Byung-chul as Byeon Ho-in : The daughter of a chaebol family. •
Lee Chae-min as Jo Nathan : The son of a chaebol family and Anna's brother. •
Kim Eui-sung as Jo Won-do : Jo Nathan and Jo Anna's father and leader of the "Criminals' Association". •
Shin Su-hyun as Lee Su-eun : A researcher works at Beomha Group. •
Kim Gook-hee as Park Jung-ja : A loan shark. •
Jang Hyun-sung as Hwang Hyun-sung : A detective. •
Kim Soo-jin as Lee Eun-hui : Sang-woong's mother •
Jung Seung-kil as Kang Dong-gi : Sang-woong's father
Special appearances •
Jo Bo-ah as Lee Hwa-Jin : A fire-powered superhero. •
Kim Young-ok : Old lady at the subway staircase. •
Kim Won-hae as Do Yeong Nam ==Production==