Mutation (Resident Evil: Undead)

Mutation is where an Human individual or, in some cases, a creature changes in appearance and may even gain new abilities and even weaknesses. These are Humans who mutated uniquely.

Albert Wesker
Albert Wesker injected himself with the Prototype Virus and due to his superior DNA he managed to survive. His metabolism increased, giving him incredible superhuman speed, strength, agility, endurance and a healing factor. It's effects limits itself to muscle tissue and the lower organs, leaving the brain relatively intact. This breakthrough means that Wesker's mind is retained and no ill effects take place. Wesker can also see things extremely fast such as bullets that normal eyes can't see and his eyes look like the eyes of a cat or reptile with a yellowish-red color.

Wesker's Virus is very unstable, so he has to use a special serum to keep it under control. The serum itself must be given in very precise dosages, lest it acts more of a poison and will damage Wesker from the inside. The Prototype Virus was created by Oswell E. Spencer for Project W.

James Marcus
Before his death, James Marcus was revived and "reborn" through Progenitor Virus infected Leeches, he ultimately became immortal and had a youthful appearance. Although he soon mutated into a Humanoid leech-like creature that Marcus was capable of controlling until too much damage was placed on his body. Soon Marcus lost control and the Leeches gained control, becoming much more larger and powerful, however it's weakness was sunlight which could severely burn it and leave it vulnerable to attacks.

William Birkin
Before his death, William Birkin injected himself with the G-Virus and had to undergo five forms. In his first form, this appearance resembled William's former self, his upper torso is far more muscular due to a sudden increase in muscle mass. Due to the development of the G-Virus, damaged tissue is replaced with more heavily-muscled version. This characteristic of the Virus led to a disproportionate right arm, and a large tumor-like eyeball has developed within his shoulder. Also, two vestigal arms can be seen beginning to grow in the torso, foreshadowing his later mutations.

In his second form, William's pants are torn apart to the mid-thigh and the remains of his body were replaced with new, stronger parts: the head was pushed down into the thorax, the digits of the right hand sprout into massive talons comprised of bone, two tiny vestigal limbs also developed la