I actively play “Left 4 Dead” and “Left 4 Dead 2”. In bothgames there are “special infected” including a Spitter [spits toxic goo thatattracts the horde], a Boomer [fat zombie that pukes on survivors decreasingvisibility as well as attracting the horde], a Smoker [has a tentacle-liketongue that wraps around survivors, incapitating them and allows the zombies toattack], a Charger [infected with a huge arm that incapitates survivor andbangs them over and over on the ground], a Jockey [midget-like thing that jumpson survivors, controlling movements], a Hunter [ninja-like infected that willpounce and shred the stomach and guts of survivors], a Witch [when startled,she’ll go after whoever spooked her and go bat shit crazy on them], and a Tank[imagine a steroid user turned zombie]. Could these creatures be a possibility inthe coming apocalypse or are they just works of fiction?
as i say with most, Everything is possible as long the math behind it works.
Or Some scientist does some dna splicing with dna and adds Ebola to it, living ebola creature?
Imagine if this virus mutates/ is adaptable to any bacterias or viruses, it could essentially draw traits from any of these bacterias or viruses to achieve its instinctual goals.
Now add Drugs into the mix of the virus meanwhile becoming infected.
Imagine a Rabbies infected man on crack, how do you think his crack usage would affect his now newly contracted disease.
Now just to throw more in there, lets add steroids onto his crack habit.
Visually its unlikely they will achieve the gruesome forms as in l4d 1-2 or as in Resident evil, they would retain most human features, unless the virus adapts a way to mutate the bone itself..
As a last note, i know quite a few here whom would say its a scientific impossibility