Dark Rings
First appearance	Knuckles' Chaotix (First and only appearance)
User(s)	Dr. Robotnik
Purpose	Powering Robotnik's machines
Description	Artificial rings

Dark Rings are synthesized rings, used by Dr. Robotnik as a source of energy in the game Knuckles' Chaotix. They are reddish-brown in color.

Small versions of Dark Rings are seen throughout the game after the player destroys a Badnik, similar to Sonic Advance 3, but the rings can't be collected. Every boss in the game is shown to be powered by a Dark Ring, the container of which usually serves as a weak spot. Although the Dark Rings are very powerful, they disintegrate once they leave the object they are powering.