Dark Matter is a character in the Kirby franchise. He is an enemy and a boss in most of the games. He is the last boss in Kirby:Mass Attack and has sometimes swallowed King DeeDeeDee.
- The Swordsman form of Dark Matter has a laser attack with the same sound as the laser ball of Kirby's Adventure.
- In Kirby's Dream Land 3, the intro video shows Dark Matter breaking through Pop Star's rings to get to the surface. When Kirby defeats Zero, the Dark Matter cloud explodes in the colors of Pop Star's rings (Blue, Yellow, and Red), presumably firing them back into Pop Star's atmosphere.
- In Kirby's Dream Land 3, Dark Matter was a simple circle with a white eye with a red iris and pupil, and orange circles lining it. In Kirby 64: The Crystal Shards, however, the orange circles are gone, it is more of a cloud than a circle, and its eye is still white with a red iris, but this time with a black pupil and orange spike-like marks extending from the iris, making for a more frightening appearance. The reason for this redesign is unknown, though it is likely to have been the difficulties of making 3D models of the original design.
- Kirby 64: The Crystal Shards is the only game Dark Matter appears in where it does not directly fight Kirby.