Ed is the friendly bartender in the Melkotian illusion of Tombstone in Spectre of the Gun who greets Kirk's party as the Clantons and will not believe they are anyone else.
Ed appears in the Original Series episode Spectre of the Gun. He tends bar in the saloon of the incomplete Tombstone, a set of false fronts and wall-less rooms under a red sky, that the Melkotians have built from Kirk's mind.
When the landing party walks in he welcomes them warmly as Ike, Frank, Tom, Billy and Billy Claiborne, pours their usual drinks and warns them that the Earps are in a dangerous mood.
Kirk tries to convince him of the truth, even showing him his strange clothing and devices, but Ed laughs it off as one of Ike's jokes. His cheerful refusal to see anything but the Clantons is the first sign that the people of the town are locked into their roles.