Thernbee was a male Human who was part of a colony that resided on a moon affiliated with the Galactic Republic. During the Clone Wars, knowing that this colony couldn't be saved from a Separatist invasion, most of the population evacuated the moon. Months later, in around 20 BBY, Grand Master Yoda went on a mission to the besieged moon in order to evacuate the last of its population, including Thernbee.