Lao San, is a retired Marine veteran who lives in his world of innocence and optimism due to a brain injury. He assumes the role of a dedicated vigilante and fights people whom he considers bad.
刘烨
as Lao San / Wang Tao
Steve Yoo
as Blackie Hei Yong
Zhang Zilin
as Han Xiao Hui
Chiao En-chun
as Chief Han
Liu Hailong
as Fatty/ Er Pang
Xu Dongmei
as Professor
Alan Ng Wing-Lun
as Bin Zi
Yuming Du
as Brother Hui
张陆
as Xiao Yong
He Yongsheng
as Director of police
Zhan Shi-Bao
as Da Zhang
姜國華
as Giant Lu
