Gerald somehow created these monsters after the creation of Shadow the Hedgehog and Emerl the Gizoid. However, they went rouge and attacked everyone in sight, but were defeated by Shadow and Maria Robotnik. Gerald then put them in charge of guarding the Space Colony ARK and they tried to stop Sonic and the others from destroying the Eclipse Cannon. They were later taken over by the Black Arms and pitted against Shadow upon his next visit to the ARK.
The Artificial Chaos are generally large pillars or floating orbs of water, with a mechanical head shaped like Chaos 0's towering on top. They exist in two different versions; P-1 and P-100. P-1s fight by stabbing their enemies with quick, extremely accurate tentacles of water, or by firing lasers from their green eyes. P-100 Artificial Chaos can split their liquid bodies into dozens of small blue drones (known as Cells) that are controlled by the floating robotic head, but are not armed with lasers. These drones constantly edge their way toward the player and explode on contact. If the player attacks them, they do explode (also causing the Cells around them to explode) but they do not hurt the player. After releasing its Cells, the Artificial Chaos head simply floats, defenseless, in midair until it is destroyed. Some Artificial Chaos seem to lack any intelligence or aiming abilities at all, and simply spin around, shooting lasers in random directions. They are the only enemies that can't be destroyed by the Shadow Rifle with one hit. However, they can be destroyed with one hit using bomb-type weapons.
- In the original Dreamcast version of Sonic Adventure 2, their liquid bodies had a transparent effect. In the GameCube version, the transparency effect was removed, making them appear to have a more "solid" appearance. The Artificial Chaos experiments in Shadow the Hedgehog are more similar to their Dreamcast counterparts.
- According to Gerald's statement in Shadow the Hedgehog, on Expert Mode in Lost Impact, the reason the Artificial Chaos became hostile was because Gerald Robotnik accidentally reversed the positive and negative electrode connectors within them. This created a problem in their programming and resulted in their hostility.