Chemical Plant

Chemical Plant (ケミカルプラント, Kemikaru Puranto) is a location in the Sonic the Hedgehog series. It is a facility on Westside Island controlled by Dr. Eggman. Its name comes from the sheer volume of chemicals produced here, most-if not all-of which are known to be toxic.

"."
 * —About the Chemical Plant.

Creation
The Chemical Plant Zone was built by Dr. Julian Snively, the renegade G.U.N. scientist, following the Eggman Invasion and the battle of Mobotropolis, though he later claimed he had been forced to construct it.

After defeating Dr. Eggman and his assistant Snively on South Island, Sonic Hedgehog and Thomas Jones chased the two mad doctors down to Westside Island, where they teamed up with the new sidekick and best buddy Tails the Fox. Chemical Plant Zone was one of the Zones they passed through in their efforts to defeat the mad doctors, whose goal on Westside Island was major construction and refinements as part of their plan for world domination.