Augustus was Galen's cousin and childhood friend. Last Galen heard, Augustus was working for the Council but he had since become Prefect of Hathor, the remote town they were staying in. Galen went to Augustus for help in stopping District Chief Aboro's excesses, but Aboro bribed his way to replacing Augustus as Prefect, who was promptly removed to another town. After the fugitives exposed his corruption, Aboro was arrested for trying to kill Urko, and cut scenes depicted Augustus being restored to his position as Prefect.
- Augustus is said to be a distant ancestor of Cornelius in the 2018 novel Death of the Planet of the Apes.