<Dl> <Dd> Appears in 20 episodes from "Pilot" to "Last Forever" </Dd> </Dl> <Dd> Appears in 20 episodes from "Pilot" to "Last Forever" </Dd> <P> Played by Joe Nieves, Carl is the bartender at MacLaren's, which is frequented by the main characters . Carl's last name is MacLaren and he owns the bar . Carl eventually has a son who helps him at MacLaren's . </P> <P> Joe Nieves received the part after the scene he was supposed to be in was cut from the pilot but no one had told him, and he turned up on set in a police officer costume . As no one wanted to tell him that they had cut his scene, they gave him the role of Carl . Carl is named after one of the assistants to the producers . </P>

Who plays the bartender in how i met your mother