|The canonicity of this article's subject remains dubious. Though it doesn't contradict official continuity, it has not been referenced in any confirmed canonical material.|
Cillian worked as well delivering nonmagical supplies in his scooter to the Watchers Academy nearby, where his boyfriend lived. He and Rhys had been in a relationship for a year, but it was only when his friend Athena Jamison-Smythe, another resident of the castle, protected him from a hellhound attack that Cillian began learning about the world of Watchers, Slayers, demons, and vampires.
Cillian was described as having brown skin, dark brown eyes, and hair buzzed close to the scalp. His mother was British-Nigerian.