How many characters can one man play?
Stunt man Jerry Gatlin spent a lot of time in the movies of the 50s, 60s, and 70s, doing stunts and playing bit parts and walk-ons in a lot of John Wayne movies. His biggest acting job may been as one of the Duke's partners in The Train Robbers. But in this movie he shows up at least four times playing four different characters! Each time he's in different clothes and different mustaches. Next time watch for the train conductor, one of the men in the saloon joining in the raffle, one of the deputy's at the ambush (even does his own stunt), and then the second man to almost bump into Dino when he's going after some answers near the end of the movie.
I guess in a movie with too many multiple gunshots we should expect at least one person doing multiple characters!