From The Grey House:
The true Slayers at the table, Zechariah, Miguel and the newest member Agnes, weren’t skating around the cannon fodder situation, as Leroy and Ryan were smart vampire hunters. These two men seemed to hold contempt for other vampire hunters, because the others weren’t as helpful to the Slayers. The only other vampire hunter this group did not mind having around was Dean, who was currently out on an extended errand. The young man was a planner: never went out on missions, just made the missions run smoothly. Leroy was good with guns and could quickly kill young vampires. Natalia doubted he had ever been up against a vampire as old as Vincent. Ryan was an ex-cop and had many useful connections.