At the Blue Whale, Joe addresses the bartender as "Punchy." So far, in the series the bartender has had no lines at all to speak. Remember background extras get paid much less than actors who have lines to speak, so this is probably why the bartender, like Suzy the waitress at the Collinsport Inn coffee shop, also has no dialogue.
The Blue Whale,and the bartender,are in this episode,but he is not listed in the credits.