Jules-de-chez-Smith-en-face (Jules-from-Smith’s-across-the-Street) is one of Gaston’s good friends. He "works" in the office just across from Gaston's, on the other side of the street. They attempt to communicate by talking into yogurt containers connected by a cord strung across the street between their windows. They even send each other remote-controlled airplanes, or they will try to string a rope above the street in the middle of the winter in order that icicles form on it. He is a blunderer, just like Gaston.

Bertrand Labévue is another one of Gaston’s friends. As his name indicates, (la bévue is another synonym for "the blunder"), he is also a big blunderer. He often tries to help his friend when Gaston has some tough times at the office. Depressed, Bertrand is equally as interested in food as Gaston, but Gaston’s culinary "exploits" only serve to deepen Bertand's depression. Like Gaston, Jules and Bertrand like music. They play together, but it is often a disaster…

Manu accepts many different jobs : he is a chimney sweep, a sewer worker, and sometimes he is responsible for the installation of street signage. He is always ready to help Gaston to get on Agent Longtarin's nerves.