Helpless Cast and Characters

Lee Sun-Kyun as Jang Moon-Ho




Kim Min-Hee as Kang Sun-Young




Cho Seong-Ha as Kim Jong-Geun




Song Ha-Yoon as Han-Na




Cha Soo-Yeon as Kang Sun-Young




Choi Duk-Moon as Det. Ha Sung-Sik




Lee Hee-Joon as Sun-Young's ex-husband




Bae Min-Hee as Client from veterinary clinic




Kim Tae-In as Park Myung-Shin




Kim Min-Jae as Dong-Woo




Im Ji-Kyu as stalker




Kim Sun-Guk as Gi-Tae




Yang Eun-Yong as Gi-Tae's wife




Choi Il-Hwa - Moon-Ho's father




Park Hae-Joon - loan shark




Park Sang-Hyun - Yongsan Station detective