The Disturbing Acts of Violence Department is an EPC department that handles punishments; unlike the prime DAVD, the EPC's version inflicts the namesake acts of violence. It is run by the Big Thorn. It isn't known why the mirror DIS don't handle punishments, since they still arrest rogue agents, but the mirror DAVD may be a branch of the mirror DIS. Since it's never been explained, there are multiple possibilities.
Proponents of the DAVD Conspiracy Theory may be mistaking this multiverse's DAVD for the prime DAVD.