The Residents are people who live in Adventure Bay that the PAW Patrol often drive past or are just shown in a episode, living out their daily lives. Rarely, the Residents have speaking roles, such a "Elephant at the crossing!" or "I'm so hungry I could eat a..." (From "Pups Save the Circus") but don't have a massive amount of dialogue. They also just scream.
In most episodes the Residents don't speak or scream, they just wave or cheer at the PAW Patrol.