UPDATE: In honour of the AMAZING LOOKING L4D2, I'm tareing myself apart to create new bosses, uncommon common and special infected ideas for L4D, as well as a new thing called a viral strain (a series of related infected enemies with different levels of power,) and new ANIMAL INFECTED!!

Also, I'm adding loads of new Killing Floor specimens!

Also, I've added some new progress critera.

"In Progress" means that I'm still drawing it, and the percentage shows how close I am to finishing it
"Pending means that the image is 100% complete, and I simply need to upload it

While you wait for the new guys to be uploaded, why not take a trip down memory lane and look back on my previous creations?

UPDATE 2:
I've decided to add some achievements relating to each L4D infected and KF Specimen!

UPDATE THE III: The Killing Floor Specimens are fine as they are, but the Infected concepts have lead me to think that they deserve a whole new game. And so I'm working on an new idea:

Left 4 Dead 3: Immunity Overide

It's a whole new game idea, featuring my new weapons, new infected, new game mechanics, new dangers, new plot, new survivors and a totaly new setting.

L4D3 Overveiw: In Progress 10%


Left 4 Dead

Special Infected (Examples: Smoker, Hunter)
The Vampire: [link]
The Assassin: [link]
The Arsonist: [link]
The Berserker: [link]
The Scream-O: [link]
The Sprinter: [link]
The Landmine: [link]
The Gargoyle: [link]
The Sadist: [link]

Boss Infected (Example: Tank)
The Archetype: [link]
The Cannon: [link]
The Stalker: [link]
The Reaver: [link]
The Knight: [link]

Final Boss Infected
The Trigger: [link]
The Commander: [link]
The Boogeyman: [link]

Rage Infected
The Stinkfist: [link]
The Rotter: [link]
The Brute: In Progress 15%
The Redeye: In Progress 10%
The Smogger: In Progress 5%

Rage Infected Strain
The Cancer Strain: Pending
The Blade Strain: In Progress 25%
The Talon Strain: In Progress 20%

Uncommon Common Infected (Example: The Hazmat)
The Brutaliser: Pending
The Kamikaze: [link]
The Bouncer: Pending
The Tinpot: Pending
The Brawler: Pending

Non-Playable Infected (Example: Witch)
The Riot: [link]
The Sheild: [link]
The Terroriser: [link]
The Drowner: [link]
The Hangman: [link]
The Maniac: Pending

Animal Infected:
The Gorebeast: In Progress 15%
The Mauler: [link]
The Hellhound: In Progress 20%
The Swarm: In Progress 5%

New Weapons: In Progress 10%


Killing Floor

Normal Specimens (Example: Clot, Bloat)
The Gangrene: In Progress 0%
The Walloper: Pending
The Birther: In Progress 10%
The Defender: Pending

Specimen Varients:

-Birther-
Birther Bombspawn: In Progress 15%
Birther Spitspawn: In Progress 20%

-Clot-
The Regenerator: [link]
The Lobber: [link]

-Crawler-
The Spawner: Pending

-Bloat-
The Exploder: Pending
The Tosser: Pending
The Shunter: Pending

-Husk-
The Slagpile: Pending

-Skrake-
The Butcher: [link]
The Dismember: [link]

-FleshPound-
The Slave Driver: Pending
The Flagellator: Pending
The Soldier: Pending

Killing Floor Bosses (Example: Patriarch)
The Fortress: [link]
The Empress: [link]
The Armoury: [link]
The Guardian: [link]
The Martyr: [link]
The Phobia: [link]
The Chimera: [link]
The Devourer: [link]
The Re-animator: Pending
The Malefactor: Pending

-Martyr-
The Sunderwound: In Progress 5%
Bladespawn: In Progress 0%
Spewspawn: In Progress 0%
Lungspawn: In Progress 0%
Whipspawn: In Progress 0%
Leaperspawn: In Progress 0%
Bombspawn: In Progress 0%
Clawspawn: In Progress 0%

-Chimera-
Wolf Form: In Progress 0%
Gorilla Form: In Progress 0%
Crawler Form: In Progress 0%

New Weapons: [link]