MacKenzie Hayes is a Senior Trooper with the San Andreas State Police.
Mackenzie Hayes was born in Vermont and is an international superspy for the CIA. A rumor throughout the CIA is that she once killed a man with her words alone. While she was on one of her assignments, her husband was murdered as a warning to her to cease her spy activities. She, however, has continued her CIA work and now moonlights in San Andreas as a state trooper in hopes of finding the murderer of her husband Arthur Mackenzie.