The character made his first appearance in the episode "His Way", and returned later in the sixth season in "Tears of the Prophets" and throughout the . Fontaine represented a source of romantic advice for the crew, helping to get Odo (René Auberjonois) and Kira Nerys (Nana Visitor) together as well as aiding Quark (Armin Shimerman) and Julian Bashir (Alexander Siddig) to move on from their love of Jadzia Dax (Terry Farrell). He also helps Nog (Aron Eisenberg) to recover from the loss of his leg in "". Returning the favor in "Badda-Bing Badda-Bang", the crew help Fontaine get his bar back after it is taken over by the American Mafia. The crew return to the bar one final time in the series finale, "What You Leave Behind", for the celebration party following the victory over the Dominion.