Subject 4 (character)

The protagonist (real name unknown), is the main character of Subject 4. He is a new employee at Mace Arms. At the end of Subject 4, he gets turned into its namesake character. He is currently frozen in ice.

Appearance

 * As a human, the protagonist's appearance is unknown, though it is seemed that he has short hair, or a hat.
 * As Subject 4, he is most similar to Subject 3, with both of them featuring a large bulky body and connected eyes. However, Subject 4 has mixtures of red and purple throughout the body, with gashes, feathery structures, and melting skin all over. For a mouth, Subject 4 has a protruded snout with several hooked teeth.

Personality
As a human, the protagonist was shown to be blindly loyal to authority, oftentimes to a fault. He is not used to all this insanity and wants a sense of normalcy, though fate has other answers.

While the slime zombies had no semblance of personality or human emotion, the Avian infected (such as Subject 1) still maintained their humanity, though their sanity was greatly reduced. As such, it is unknown whether or not traces of Subject 4's former self exist.

Powers and Abilities
Not much has been seen out of Subject 4 so far. From what we know, it is more resistant to cold temperatures than the slime zombies, and in general is more durable.

Subject 4
After being betrayed by the Loudspeaker Man and Mace Arms, the protagonist is experimented on. Due to exposure of Subject 1's DNA (In parts 5 and 7), the cocktail of Toxadoma Mucii and dormant Toxadoma Avii inside of him turns him into a hybrid monstrosity. Before being able to attack the scientists, he is frozen in ice. His current whereabouts and fate are unknown.

Trivia

 * Subject 4 will return.
 * The Protagonist becoming Subject 4 was a part of the story from almost the very beginning (even before the game was named), and has been heavily forshadowed.