Nikorai Yakovich Petorofu (ニコライ・ヤーコヴィッチ・ペトロフ Nikorai Yākovicchi Petorofu?), also known as Niko (ニコ Niko?), is a character in Digimon World Re:Digitize. Niko lives in the same building as Taiga, and is player of Digital Monster whose rank number is 4.