Distortion Monsters (ディストーションモンスター, Disutōshon Monsutā,, abbreviated
According to Maxus & Yuzuki, Distortion Monsters exist as a result of the bending, warping, creation, and destruction of the time stream. They are said to exist outside of the time stream, hence why they can only be Summoned to the field (being a representation of inside the time stream) when a Phase is Rewritten.
More to come later.