Creed McIlveen

 was an undercover police officer. He met Benny when they were investigating the spread of warlock. (PROSE: Warlock)

He later worked for the Agency, a semi-official, black-ops crimefighting organisation. (PROSE: Warchild)

McIlveen was one of the guests at Benny and Jason's wedding in Cheldon Bonniface. (PROSE: Happy Endings)