Infestation

"This infection, this infestation is the reason I hate bioweapons. The Rogues made this to kill most life on earth, making it easy for a takeover. It didn't kill...It twisted and corrupted everything it touched, making those that got infected prisoners of their own bodies, their bodies forced to eat whatever living that is in front of them. They're still alive, but dying on the inside."

-Cody

The infestation is a Rogue Bioweapon, described by Cody as a "Contagious turbo cancer", originally made to kill all life on earth in Operation: Recolonize. During this operation, an initial 300 people were infected and converted, and the numbers rapidly rose to 6,000 people. If not for the actions of one kid with a fire in his gut, earth would be overrun and completely covered in a thick layer of re-purposed flesh. (We probably already know who this kid is)

The Infestation, when referring to the victims of it, also known as the Forsaken (Sometimes called the God-Forsaken) The Afflicted, The Horde, or The Devil's Plagued, are usually twisted into various forms that serve any multitude of purposes, from making new infested flesh out of available biomass to producing weaponry for it's fowl foot-soldiers.

Some forms include:

The Grappler:

'''Long, over developed arms and legs, with a strangely stunted torso and head, the grappler, true to it's name, grapples things. Larger grapplers are usually made out of several corpses, as one standard grappler is all that can be made out of a single corpse.'''

'''Footsoldier: Footsoldiers are typically used as cannon fodder, armed with whatever they can get their decaying hands on. Their forms have not changed much from a normal, uninfected member of whatever species the footsoldier is made from.'''

'''Brute: Brutes are beefier, more dangerous combat forms. LIke a footsoldier, except bigger, and typically they wield melee weapons'''

Tanker:

'''Tankers are former engineers, encountered by Cody aboard the E.O.S.S Renegade, a space station that had been overrun by infested. Tankers are severely deformed, with their tools and equipment fused into their flesh and bone, causing intense agony to the victim of the disease.'''

Zipper:

'''The Zipper is a massive entity which took over a Type 128 Planetary Defense Weapon. It has been named "Zipper" after a type of weapon known as the "Zip gun" because of it's ramshackle appearance and often dangerous firing mechanic, which not only poses a threat to Earth, but to the organism itself. Currently, the spread of the infestation on earth was caused by one mortar shell reaching earth around 2 years ago, which also created the Deathbed Plague. Firing this shell has drastically damaged the organism and the cannon itself. Because of this (And a beating from Earth's own defense weapon, around 12 shells total were fired in 8 hours) the Zipper is in hibernation, and since every known lifeform on the planet was consumed, no biomass can be redirected to it to repair it.'''