From Halopedia, the Halo wiki
Michelle Rivera is a human employee of the Liang-Dortmund Corporation living on the human Outer Colony of Meridian. She is proud to be living on the moon's surface, and not on a space station above it. She left a personal audio log wherein she expressed her pride and her prediction that kids growing up on Meridian would run the Hestia system someday, which was listened to by Fireteam Osiris when the fireteam was at Meridian Station.
List of appearances