|This article contains fan theories about Arthur Arden's relationship to Bloody Face. It is separate to avoid contaminating the main page with spoilers and speculation. It is subjective.|
- Skinning a human being requires surgical skill.
- Dr. Arden has great disdain for and possibly a history of killing women he finds impure such as prostitutes. Bloody Face goes after women he/she may find impure such as lesbians and African-Americans.
- He has failed two rape attempts; Shelley and the prostitute. You'd expect such a feared serial killer to be more competent at subduing women.
- His amputation of Shelley's legs looks to have been poorly done by an amateur. Not only might he not be Bloody Face; he might not even be a surgeon.
- Thredson confessed to being Bloody Face.