Sidekick characters are secondary figures in stories who support the main protagonist. They often provide assistance, comic relief, or emotional depth, enhancing the narrative. Sidekicks can be human, animal, or even fantastical beings, and they often have distinct personalities that complement the hero's traits. These characters frequently help to highlight the main character's qualities, such as bravery or intelligence, by contrasting with their own traits. Examples of famous sidekicks include Robin from Batman, Samwise Gamgee from The Lord of the Rings, and Donkey from Shrek. Their presence enriches the story and engages the audience.