William Afton is a neurodivirgent character

"natural variations in brain function, information processing, learning, and behavior that differ from the typical average" Neurodivergent refers to someone whose brain functions differently from the average, not simply being "slower" or "dumber," but also having a faster or more efficient brain than the average. William is canonized as a character with above-average intelligence, which already makes him a neurodivergent character. However, there's also the theory that he might belong to the autism spectrum (and no, being autistic doesn't excuse his actions at all), but in my opinion, even if i belive that theroy, that could simply be a coincidence that some of his attitudes or characteristics happen to fit with symptoms of the autism spectrum.