|Emergency Medical Holographic Program AK-1 Diagnostic and Surgical Subroutine Omega-323 Mark IV|
The Emergency Medical Hologram Mark Four (EMH Mark IV), also known as Emmie, is a Holographic program deployed on the USS Prometheus with the intention of providing assistance to Starfleet medical personnel in an emergency or to take command of said medical personnel if the Chief medical officer or Assistant Chief medical officer are unavailable and no one among the present medical personnel is assuming the leadership role in the absence of the Chief medical officer or Assistant Chief medical officer. (Star Trek: Prometheus)
In 2379, the Emergency Medical Holographic Program AK-1 Diagnostic and Surgical Subroutine Omega 323 Mark IV, of the starship Prometheus personalized her appearance, expanded her personality subroutines, and named herself Emmie (a name based on the name of her program) with the blessing of Captain Logan MacLeod, in an attempt to differentiate herself from the other Mark IV EMHs and so she could relate better to the crew and guests on board the Prometheus.
In late 2379, Emmie began developing friendships with various crew members, including Cadet Erin Denali, Doctor Atana Ral, Counselor Tahna Malyik, and Petty officer third class Celes Tal all of which helped the crew to regard her as a person and not just a program. Emmie also came to regard Lou, the vessel's other holographic crew member, as a cousin - a feeling which he reciprocated.
- "Please state the nature of the medical emergency."
- — Emmie (Upon activation)
- "I'm the Mark Four Emergency Medical Holographic Program, but you can call me Emmie."
- — Emmie
- Images of actors are used to simulate the "crew" in Star Trek Prometheus. As a result The EMH Mark IV is portrayed by Melina Velba.