Artificial Chaos (Sonic X)

The Artificial Chaos are creatures mentioned in the Sonic X anime.

Description
While they are never seen, it can be assumed that, much like their game counterpart, the Artificial Chaos are clones made from studying Chaos 0 himself. According to Gerald's diary, he assumed that there were people who wanted to take control of these creatures.

Existence Contradiction
The very mentioning of the Artificial Chaos makes little to no sense when taking into consideration Sonic X's story. Unlike the games, Gerald never would have had any sort of oppurtunity to visit Angel Island or the Mystic Ruins in order to study the Knuckles Clan and learn of Chaos, as those things were in a parallel dimension, in Sonic's world, 50 years ago, which in turn would mean he would not be able to build the Artificial Chaos.

However, it may be that Gerald somehow managed to travel to Sonic's world (much like Chris did) through a machine, which may also explain how Eggman ended up in Sonic's world.