The Dixmor Inmates are a bunch of whackjobs that appear in Manhunt 2.
The Dixmor Inmates are just a bunch of failed test subjects for the The Project. They have no purpose really, they pretty much just run around yelling random things and are usually seen getting beaten by the Asylum Orderlies. Thanks to a power outage at the asylum, they escape, run around, and cause problems for Danny and The Project. They only appear in the mission Awakening and don't really appear to have an actual weapon of choice except for their fists.
According to audio files, there were originally female inmates not found in the retail version. Instead of the project vicitm being tortured in the dentist chair room, it was originally a female inmate.
The Wii version has an inmate in a straitjacket running into the wall, before Danny gets into the elevator, in place of the Legion member.