text: Comparisons A villain's supporters are normally called henchmen, minions, or lackeys, not sidekicks. While this is partially a convention in terminology, it also reflects that few villains are capable of bonds of friendship and loyalty, which are normal in the relationship between a hero and sidekick. This may also be due to the different roles in fiction of the protagonist and the antagonist: whereas a sidekick is a relatively important character due to his or her proximity to the protagonist, and so will likely be a developed character, the role of a henchman is to act as cannon-fodder for the hero and his sidekick. As a result, henchmen tend to be anonymous, disposable characters, existing for the sole purpose of illustrating the protagonists' prowess as they defeat them.
  Nevertheless, some villains do have sidekicks, including Lex Luthor's Mercy Graves, the Joker's Harley Quinn, Jigsaw's Amanda, Shao Kahn's Shang Tsung, Shinnok's Quan Chi, Ben Wade's Charlie Prince (from Three-Ten to Yuma), Light Yagami's Misa Amane and Ryuk, Wario's Waluigi, Dr. Eggman's Orbot and Cubot, and Magneto's Mystique (albeit only in the X-Men live action films).
  Examples
  Some well-known fictional sidekicks are Don Quixote's Sancho Panza, Sherlock Holmes' Doctor Watson, The Lone Ranger's Tonto, The Green Hornet's Kato, Shrek's Donkey and Puss in Boots, Aquaman's Aqualad, Mickey Mouse's Donald Duck and Goofy, Mario's Luigi and Yoshi, Sonic's Tails and Knuckles, Donkey Kong's Diddy Kong, Bugs Bunny’s Daffy Duck and Porky Pig, Captain America's Bucky, Batman's Robin, and SpongeBob SquarePants’s Patrick Star