Mr. Nibbles is a fictional character portrayed by Callum Shoniker in the TV series Paw Patrol.
They appear in 4 episodes out of a total of 262 aired so far
Episodes4
Pups Save a White Wolf/Pups Save a Wrong Way Explorer
episode S6.E19 december 2019After a sudden snow storm, Everest cares for a white wolf cub as they work together to help the PAW Patrol find them. Famous wrong-way explorer, Travelling Travis, accidentally takes Chickaletta to the North Pole where they run into - crocodiles?-
Mighty Pups, Charged Up: Pups vs. the Copycat
episode S6.E21 january 2020The Mighty Pups get Charged Up to take on new super-baddie, The Copycat. It'll take all new powers and gear to take down their most formidable foe to date. 
Mighty Pups, Charged Up: Pups Stop a Big Bad Bot/Mighty Pups, Charged Up: Pups vs. the Dome
episode S6.E24 february 2020
Mighty Pups, Charged Up: Pups vs. Three Super Baddies
episode S7.E4 april 2020Harold Humdinger, The Ladybird, and The Copycat team up to take the Mighty Pups' meteor, which is the source of their superpowers. The Mighty Pups must get their meteor back and Charge Up to stop the team of baddies before they destroy Adventure Bay.
- Pups Save a White Wolf/Pups Save a Wrong Way Explorer
- Mighty Pups, Charged Up: Pups vs. the Copycat
- Mighty Pups, Charged Up: Pups Stop a Big Bad Bot/Mighty Pups, Charged Up: Pups vs. the Dome
- Mighty Pups, Charged Up: Pups vs. Three Super Baddies