Professor Ley'arsha was a Human female who was sent to the planet Athiss. She was part of a Republic survey team six-eight-nine-mark-one. Her role involved overseeing the unearthing of Sith remains at Vodal Kressh. During this excavation, she succumbed to the influence of Vodal Kressh's spirit, becoming one of his adherents.
A strike team was dispatched to the Athiss ruins in 3643 BBY. Ley'arsha confronted this team, but ultimately met her death.