A sidekick is a slang expression for a close companion or colleague who is, or is generally regarded as, subordinate to those whom they accompany.

Porky Pig is an animated character in the Warner Bros. Looney Tunes and Merrie Melodies series of cartoons. He was the first character created by the studio to draw audiences based on his star power, and the animators created many critically acclaimed shorts featuring the character. Even after he was supplanted by later characters, Porky continued to be popular with moviegoers and, more importantly, the Warners directors, who recast him in numerous everyman and sidekick roles.