Black Goo - Karistus
Designed by the Karistus to fight against the M-Goo, 1155. It is called OTEKA, which in Karistus means Revenge.
Not as prolific as 1155 ... but it is everywhere ... in the water, in the sewage system, above ground, under ground.
Designed to destroy the M-Goo, and most of the time, it does. However, quantity of M-Goo is vastly more than K-Goo.
K-Goo infection is a protective measure against M-Goo attacks. All 72's ever, have organic K-Goo in their bodies.