A cartoon sidekick is a character who often assists and accompanies the protagonist in a cartoon or animated series. Some synonyms for the word "cartoon sidekick" include "companion", "partner", "assistant", "side companion", and "secondary character". These characters can be animals, objects, or even humans who provide comic relief, help the protagonist achieve their goals, or provide support during their adventures. Some popular examples of cartoon sidekicks include Robin in Batman, Donkey in Shrek, and Olaf in Frozen. These characters often become fan favourites and are loved by children and adults alike. They are an essential part of many animated series and cartoons, bringing laughter, fun, and entertainment to audiences around the world.