As a dedicated student of the sciences, Vexillum Yost earned their Astrobiology Doctorate from The Institute of Chaugnaros in order to better serve the needs of their people as they travelled the cosmos. As a member of the Doctor caste, it was always Vexillum's goal to obtain their Doctorate and use their education and skills to help their own people, but upon learning of the Universal Primate Captivity Crisis, their priorities changed. Now, with the native primates still in captivity on Earth, Vexillum and the Doctors venture to fulfill the promise of release that the Homo Insipiens have reneged.