Mega Man X: The Day of Sigma
- Cast: Takahiro Sakurai, Ryotaro Okiayu, Mugihito, Tomohisa Aso, Tadashi Miyazawa
- Duration: 25 minutes
- Genre: Animation, Action, Science Fiction
- Rating: 9.5/10
- Release Date: 2005-12-15
In a prequel to Mega Man Maverick Hunter X, the Maverick Hunters led by X and Zero, under the command of Sigma, face reploids who have become violent.
