Listen to Dark Colossus (Kaiju) online. Dark Colossus (Kaiju) is an Unknown language song and is sung by Keigo Hoashi and Keiichi Okabe. Dark Colossus (Kaiju), from the album NieR:Automata Original Soundtrack, was released in the year 2017. The duration of the song is 6:06. Download Unknown songs online from JioSaavn.