B.O.W.

Bio Organic Weapons (or B.O.Ws for short) is an Umbrella Corporation and TRICELL term for a creature intentionally created or genetically modified using a type of mutagen. Bio Terrorists were the main people who used B.O.Ws.

B.O.Ws were a major focus of research for the Umbrella Corporation. And due to the rising use of B.O.Ws the Global Pharmacuetical Consortium founded the Bioterrorism Security Assessment Alliance (BSAA), an elite military unit trained and deployed to combat B.O.Ws.

T-Virus

 * Zombie: Walking Corpses who infect others and eat Human survivors.
 * Crimson Head: Revived Zombies.
 * Cerberus: Dogs infected by the T-Virus in the Arklay Mountains.
 * Hunter: A series of infected reptiles and amphibians.
 * Zombie Dog: Zombified Dogs.
 * Yawn: T-Virus infected Snakes who greatly increase in size.
 * Neptune: T-Virus infected Sharks.
 * Chimera: Human/fly fused creatures.
 * Plant 42: Large Plant infused with the T-Virus.
 * Black Tiger: T-Virus infected Spiders who greatly increase in size.
 * Web Spinner: Even bigger infected Spiders.
 * Crow: Infected Crows.
 * Wasp: Large infected Wasps.
 * Little Spider: Infected Spiders.
 * Tyrant T-002: A giant monster created in the Arklay Laboratory and planned to be used by Albert Wesker.
 * Tryant T-103: Human Tyrant type clones.
 * Licker: Further mutations of Zombies or in laboratory conditions.
 * Alligator: Infected Alligators.
 * Plant 43: Better counterpart of the Plant 42.
 * Giant Moth: Infected Moths.
 * Cockroach: Infected Cockroaches.
 * Nemesis T-Type: An intelligent Tyrant with the main objectives of hunting down and killing remaining S.T.A.R.S. members.
 * Grave Digger: Irregular Mutated Millipedes resulting to massive doses of the T-Virus.
 * Brain Sucker: Athropods infected by the T-Virus.
 * Sliding Worm: Parasitic offspring of the Grave Digger.
 * Proto Tyrant T-001: Experimental Tyrant.
 * Eliminator: Infected Monkeys.
 * Lurker: Infected Amphibians.
 * Plague Crawler: Infected Insects.
 * Stinger: Infected Scorpions.
 * Infected Bat: Infected Vampire Bats.
 * Centurion: Infected Centipedes.
 * Tyrant R: Experimental subspecies of the Tyrant 103
 * Ivan: Re-engineered derivation of the 103 Tyrants which serve as bodyguards for Sergei Vladimir.
 * T-A.L.O.S.: Computer-controlled powered assault armour grafted on an Tyrant.
 * Bandersnatch: Tyrant Model.
 * Jabberwock S3: Experimental biological weapon series.
 * Anubis: Fused infected Bat/Insect.
 * Black Widow: Infected Black Widow Spiders.
 * Ivy+YX: Infected Ivy plants.
 * Piranha: Infected Piranha Fishes.
 * Moth Parasite: Infected Moth that bursts from it's host chest and latches onto peoples backs.
 * Sweeper: Hunter Type.
 * Gulp Worm: Infected Earthworms.
 * Jumping Maneater: Infected South American Spiders.
 * Tyrant T-103 Mass Produced: Experimental form of Tyrant.

Las Plagas

 * Ganado: Infected Humans who are controlled and can use weaponry and tactics as well as act like regular Humans.
 * Dr. Salvador: Ganado with Chainsaw who gain higher health.
 * Bella Sisters: Two female Chainsaw-wielding Ganados with higher health.
 * Garrador: Ganado with blades and had crab-like Plagas.
 * J.J.: Ganados with higher health and capable of wielding Mini Guns.
 * Regenerator: Regeneratable experimental Humans with leech-like Plagas.
 * Iron Maiden: Upgraded Regenerators with spikes, more leeches and no eyes.
 * Novistador: Insect-like Humans who can turn invisible and fly.
 * Del Lago: Massive infected Salamander.
 * El Gigante: Giant infected Humans.
 * Colmillos: Plaga-infected Wolves.
 * Armadura: Plaga who control Knight armours.
 * U-3: Infected fused with Humans, Insects and Reptiles.
 * Majini: Better Ganados who are more capable.
 * Big Man Majini: Bigger Majini with more health and strength.
 * Executioner Majini: Bigger Majini with a giant Axe and better health and strength.
 * Chainsaw Majini: Insane Chainsaw-wielding Majini with more health.
 * Giant Majini: Bigger Wetlands Majini.
 * Gatling Gun Majini: Base Majini with much more strength and health who wield Mini Guns.
 * Cephalo: Centipede-like Plaga.
 * Kipepeo: Flying Plaga.
 * Duvalie: Plant-like Plaga which controlls all the upper body.
 * Adjule: Plaga-infected African Dogs.
 * Popokarium: Plaga infected Bats.
 * Ndesu: Better El Gigante.
 * U-8: Plaga infected Crab and possibly other creatures.
 * Verdugo: Human/Insect Plaga-infected monsters which served as Ramon Salazar's bodyguards.

Uroboros Virus

 * Reaper: Uroboros-infected Cockroaches.
 * Majini Uroboros Test Subject: Uroboros infected Man who lived in Kijuju.
 * Uroboros Mkono: Bigger Uroboros monster.
 * Uroboros Aheri: Massive Uroboros monster created from Excella Gionne.

Progenitor Virus

 * Leech: Infected Leeches.
 * Queen Leech: Infected Human/Leech.

C-Virus

 * C-Virus Zombie: Improved Zombies who act the same but can use weaponry.
 * Ustanak: A creature sent by Neo Umbrella to hunt down Jake Muller.
 * J'avo: Highly intelligent infected Humans which can use a high variety of weaponry and tactics.
 * HAOS: Massive monster found in the underwater facility off the Chinese Coast.
 * Lepotitsa: Airborne form of the C-Virus.
 * Ubistvo: Chainsaw-wielding J'avo.
 * Rasklapanie: Dangerous leech-like creature which can regenerate.
 * Ogroman: Giant Monster.
 * Chrysalid: Before the transformation into a J'avo.
 * Bzrak: Human-based B.O.W with a shark-like appearence.
 * Iluzija: Snake-like monster.
 * Gnezdo: Complete Mutant from a creature.