Dr. Elizabeth McNeil

Dr.Elizabeth Mcneil is the new head of the Research facility of the abandoned Mars research facility Eriadu. She is represented as a woman with glasses and Red hair. She is not introduced in Doom 3, but in a PDA referring her name it can be seen that McNeil abandoned Mars city before the invasion occurred.

Elizabeth was assigned in the abandoned Mars facility to lead a marine squad who was in the undergrounds of the base. She is seen in the Base command center asking to a marine whats the status of the squad. During the Invasion she was able to escape Eriadu facility and get to a sealed office on Phobos Labs. She informs the marine of the situation and orders him to get back to Phobos Labs. when the Marine gets there, Elizabeth informs him that he needs to shutdown four critical systems in order to get to Delta Labs. She figured out that Betruger was behind this. The marine loses contact with her when he gets to Delta Labs.

In a Final Cutscene she can be heard, but not seen, talking to the marine and implying that he is "home". This possibly means that McNeil survived the invasion and escaped to Earth.