Thanatos-R (Resident Evil Outbreak)

Image of Thanatos-R
This is the creature known as Thanatos after he has mutated into a more powerful version of itself. The "R" standards for "Reborn", and it is a much more formidable opponent than before. Its mutation has caused one of its arms to grow much larger with more prominent claws, and the overall height of the creature has increased. However due to the University exploding while it was still inside, it lost its right arm completely.