Ed Zeddmore, played by A. J. Buckley, is a character in the television series Supernatural.
Zeddmore and Harry Spangler are self-proclaimed professional paranormal investigators.
They are introduced in the episode "Hell House" written by Trey Callaway as the Hell Hounds, operating a website called HellHoundsLair.com. They perceive Sam and Dean Winchester as amateurs, although the latter use the duo and their website to help them defeat the monster of the week. At the end of the episode Sam pulls a prank on them by posing as a Hollywood producer on the phone.
In the episode "Ghostfacers", they produce a television pilot, which covers their investigation of a house that is haunted every leap day, where Sam and Dean make a guest appearance; however, Sam and Dean manage to magnetically wipe their footage. The episode was nominated for a GLAAD award for its portrayal of Ghostfacers intern Alan Corbett.
In "It's a Terrible Life", where the Winchesters are placed in an alternative life as office workers, Zeddmore and Spangler appear on the Ghostfacers website where they present instructional videos on how to find and to defeat ghosts, and refer to the Winchesters as rival "douchebags that we hate".
Ed, Harry and the rest of the team also star in the Ghostfacers web series, a spoof advertisement which is seen in "Hammer of the Gods". They were also used as plot devices, in the season nine episode "Thinman" Ed and Harry face a conflict similar to one Sam and Dean face, creating a parallel between the characters, at the end of that episode we see an end to the Ghostfacers after Ed invents the monster Thinman to keep Harry from leaving for a normal life.
Their names are homage to Winston Zeddemore and Egon Spengler, members of the Ghostbusters from the 1984 film.