A zombie, refers to most humans that have succumbed to the Tyrant/T-Virus, Chrysalid/C-Virus and Animality/A-Virus (either through contaminated water supply or via bites and scratches from a virus carrier). They serve as universal antagonists of the Resident Evil franchise.
The researchers at Umbrella, called them "zombies" due to their slow pace, mindless nature, similarity to the modern-day concept of a zombie in 20th century cinema, and the fact that they are walking dead corpses. Like their horror film counterparts, zombies spread the virus through biting and are walking corpses, due to the fact that individuals die before turning into zombies.
