Progenitor Virus[]
created from a virus found in a rare African flower, known as "Stairway to the Sun", which has grown underground.
- most notable infectees icnlude Lisa Trevor.
T-Virus[]
known as the Tyrant virus. The most commonly encountered virus found in most of the game series.
created from infecting Leeches with the Progenitor virtus.
Zombie[]
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G virus[]
- created by William Birkin.
- drastic mutation and constantly changing form.
T-Veronica Virus[]
T-Abyss Virus[]
created from merging the T-virus with an underwater virus found in deep sea fish.