Cahuella lived on Sky's Edge in a renovated zoological compound called the Reptile House. From there he sold weapons to both sides involved in the planet's civil war, which led to a bounty being placed on him for war crimes. Cahuella was fascinated by snakes and reptiles, and aimed to capture an adult hamadryad to keep in the Reptile House, undertaking frequent hunting trips to achieve this aim. He also had snake genes inserted into his eyes by the Ultra crew of the Orvieto to be able to hunt any creature in the dark on equal terms, as well as venom glands and fangs.