Wilson Christopher was the main antagonist of the Angel episode, "Expecting".
He was a fashion photographer and a worshiper of the Haxil Beast Angel nick-named Big Daddy Demon, which provided him and his associates with wealth and power in their respective fields in exchange for their occasional services.
During a date with Cordelia Chase, he served as a "proxy father", impregnating her with the Haxil Beast's offspring. When Angel confronted Wilson and his friends at the gun club that they were members of for information, quickly deducing their role as the creature's acolytes, Wilson attempted to shoot Angel, only to be shocked when Angel revealed his vampire nature, subsequently swiftly defeating the club members for what they had done to Cordelia and her friends.