These creatures are the result of human prisoners who were infected with the T-Phobos virus, and then tortured and mutilated to induce fear. This causes them to act very hostile towards non-infected people.
These are the most frequent enemies you encounter during Claire and Moira's scenarios. They attack by lunging themselves at you, and cause damage either with their hands, or with various implements they come armed with.
Revenant's are experiments that were created by injecting a corpse with the T-Phobos Virus and the Uroboros Virus. It is alluded that all of the Revenant's were securely sealed away during the time Claire and Moira were exploring the island, but managed to escape by the time Barry arrived.
Revenant's look like severely mutated humans, often appearing with multiple body parts crudely stitched together. Some Revenent's also have crude weaponry embedded onto their limbs, such as knives and serrated blades. They have a weak central core that exposes itself once you have destroyed enough of its body parts.
The Slinger is an experimental creature resulting from the use of the Uroboros Virus. This monster gets its name from the giant parasitic projectile it hurls at you using its massive arm. This creature regenerates its parasite after each one it throws, resulting in what appears to be an infinite supply of ammunition.
They are encountered during Barry and Natalia's scenarios. The only way to defeat them is to aim at the core it has located on its upper torso. If one of its projectiles hits you, it will explode into a shower of bile that compromises your eyesight temporarily.
When Neil gets injected with the Uroboros Virus, it results in a mutation that turns him into a large hulking monster with incredible speed and strength. As with most mutations, Neil is blinded by pure rage and will attack any one he sees in his path.
As with all Uroboros creatures, the weakness is the orange-coloured core. The core shows itself once the monster has sustained enough damage to the rest of its body.
Monster Alex (2nd Fight)
In this form, she has become even closer to an Uroboros creature, with her skin turning a darker purple colour, and the presence of more black tentacles. During this fight, she is invulnerable to conventional attacks. The strategy is to use Barry to lure her out into the open, allowing Claire to take aim and finish her off.