sidekick

/ˈsaɪdˌkɪk/
noun
  1. A close friend or companion who helps and supports someone, especially in adventures or activities.
    • She was his trusted sidekick in the school science club, helping him build every project.
    • My dog has been my loyal sidekick on every hiking trip for the past ten years.
    • In the movie, the hero's sidekick always had a funny joke to lighten the mood.
  2. A person who assists a more important or powerful person, often in a subordinate role.
    • In many comic books, the villain has a sidekick who carries out the dirty work.
    • The CEO's sidekick handled all the scheduling and minor decisions.
    • The detective arrived at the crime scene with his young sidekick from the academy.
Antonyms
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