Many films about hired killers and assassins, from Le Samourai to The American, feature lead characters that live in their own little worlds. They are loners. They are meticulous and minimalist and they stick to routines. The Accountant wonders what would happen if this character has a high-functioning form of autism. Although it's questionable whether people on that scale will be able to handle watching a bloody film like this, at least it paints a portrait of a super-cool autistic guy for others to consider.