The Toxic Waste Plant is a world accessible from the tentacles in the Sea of Static.
Features
This map is comprised of gray platforms surrounded by acid, connected together by metal bridges. Hydraulic pumps and barrels of toxic waste are strewn about the area. Some bridges have a moving platform that cannot be used unless the Dark Matter effect has been obtained, which can be done by interacting with the floating blue blob on one of the platforms.
Obtaining the Dark Matter effect allows access to a previously unreachable platform with a hole in it. Going down the hole will lead to a dark room with a pathway made of the barrels, which gets darker and darker as you progress. At the end of the path is El Bebe, a large mutant baby with three eyes. Interacting with El Bebe will cause the screen to cut out and play some strange sound effects, transporting you back to the Sea of Static.
Directions
Kubotsuki's Nexus → Sea of Static → Toxic Waste Plant
Gallery
Entrance from the Sea of Static