Chelah, a Selkath physician of the male gender, practiced medicine during the era known as the Cold War (Galactic Republic–Sith Empire). He served as the personal physician to Nok Drayen, a prominent crime lord. When Drayen was afflicted by an unidentified poison administered by his adversaries, Chelah employed carbonite freezing to halt the poison's effects. In the year 3643 BBY, Chelah resided on Nar Shaddaa, where he revived Drayen from his carbonite stasis, endeavoring to provide medical assistance. Despite his efforts, Nok Drayen succumbed to his condition within Chelah's medical facility. Subsequently, Risha, Drayen's daughter, granted the Selkath his freedom from the Drayen family's employ.