Wally is very energetic and friendly. He communicates through barks that Ryder, the leader of the PAW Patrol, is able to understand. Wally's best friend is Cap'n Turbot, a fisherman and the most frequent caller of the PAW Patrol. Wally loves to perform tricks for fish-flavored treats. In Pups and the Big Freeze, Wally is shown to be a fairly talented ice skater. In Pups Save Walinda, he marries a purple-colored walrus and introduces the pups to his new child.
Wally debuted in the pilot episode of the show, Pups Make a Splash, along with Cap'n Turbot and the PAW Patrol. He makes many appearances throughout the show, though he is seen less frequently in later seasons.