William Afton

William Afton is the co-founder of Fazbear Entertainment as well as the main antagonist of the Five Nights at Freddy's series. He was directly and indirectly responsible for numerous incidents, deaths and tragedies throughout the series. His role in the franchise's story is pivotal.

Human
Since William Afton is only ever seen in human form in some of the minigames, it's hard to pin down his exact appearance to the point where it’s mostly unknown. In the minigames he appears as a tall, skinny man with a long neck with his sprite color ranging from various tones of purple, depending on the minigame. It is worth noting that he may appear purple because he is simply hiding in the shadows.

He is also sometimes depicted wearing a yellow accessory on his chest, presumably a security badge. It isn't until Five Nights at Freddy's 3 that he retained a consistent appearance, underutilized as it may be, though he has expressive eyes and a mouth that conveys his emotional state. However, his mouth appears to almost always be put in the form of a sadistic smile. It appears that he also has a cleft chin and a protruding lower jaw.

Another instance in which William shows more detail than his other appearances is during the SAVETHEM Death Minigame, in which he has glowing, white eyes, a yellow object on his chest which resembles a badge, and either holds a purple object, which is speculated to be a weapon or tool, or extends his hand in a beckoning pose.

It is heavily implied that his true appearance is the same as his novel counterpart This would make him middle-aged with pale saggy skin, gray eyes and dark brown messy hair with a somewhat pointy nose, crooked teeth as well as pointy eyebrows.