Doppelganger (ドッペルゲンガー, Dopperugengā) is a 2003 Japanese black comedy fantasy film directed and co-written by Kiyoshi Kurosawa, starring Kōji Yakusho, Hiromi Nagasaku and Yūsuke Santamaria.

At a medical instrument manufacturing company, timid engineer Michio Hayasaki (Kōji Yakusho) struggles to develop a robotic chair that could mobilise a clinically paralysed person.

Fearing he's having a mental breakdown, Michio wonders whether a legend that says one is destined to die soon after seeing their own doppelganger may be true.

[1] Mike Bracken of IGN praised Kōji Yakusho's performance for "the difficult task of playing two characters who are the same on the outside but totally opposite otherwise.

"[2] Todd Brown of Twitch Film felt that the digital composites used to double Yakusho on screen are simply perfect.