A prominent figure in the field of Criminal Justice, Calder Denali became an activist in primate liberation after completing their tenure at Astrolabe School of Pyxis. Having been exposed to much violence as a native of the Zealot caste in their early life, Calder fled and sought refuge with the Doctors, where they learned to help others. Now, with the fate of the Earth primates in the balance, Calder has vowed to do what can be done to save them from their imprisonment.