In the game's Backer Credits, backer Mighty No. 5040 is listed with the name "Kamiya was right". This is in reference to comments made by Capcom alumn Hideki Kamiya on Twitter about Mighty No. 9 and its producer Keiji Inafune before its release, calling the game a copy of Mega Man and "an insult to their old home", in addition to comments about Inafune not actually creating Mega Man (Inafune's design for Mega Man that would define the series' art style was based on sprite work and a basic concept originally created by Akira Kitamura) and calling him a business man.