A man in a dark suit turned the corner and stopped at the sight of Laurie. He was tall and muscular, with a strong nose and a smooth bald head. Laurie spotted the stylized “Z” embroidered on the breast pocket of his jacket.

In Lonely Satellite, Kirby is a member of the Zephyr security team assigned to protect the Church of the Scorched Earth. A thoroughly bad egg, Kirby abuses his position by harassing, menacing, and assaulting the teenaged orphans in Pastor Kyle's care. When Laurie Sparks arrives, Kirby immediately targets him. After Laurie and Jonathan Frisch flee the church, Ferris recruits Kirby to come with him to Los Angeles to track Laurie down.