Lieutenant junior grade Alvarez was a Human who served as a science officer aboard the USS Farragut during the mid-23rd century.
In 2261, Alvarez was on the bridge and reported to Lieutenant Commander James T. Kirk when he arrived for their mission to survey Helicon Gamma. When the Farragut was heavily damaged by a scavenger ship's destruction of the planet, she was among those Kirk retained as a skeleton crew after a general evacuation. She informed a group of officers from the USS Enterprise that, while Kirk had taken the conn before, he had never been placed in such a position of command. (SNW: "The Sehlat Who Ate Its Tail")
Alvarez was played by Paloma Nuñez.