Parsons was a Human female who served as a Military Assault Command Operations soldier during the mid-22nd century. She was assigned to the Enterprise NX-01 in 2153 for the mission into the Delphic Expanse.
Parsons was one of a number of MACOs who accompanied Captain Archer and Commander Tucker on a boarding mission to an Illyrian starship, for the purpose of stealing the Illyrians' primary warp coil. During the action, Parsons was shot and wounded by an Illyrian particle weapon, leading Archer to contact Enterprise and order Parsons beamed back aboard. (ENT: "Damage")