riddler

/ˈrɪdlər/
noun
  1. A person who asks or creates riddles, often as a hobby or in a contest.
    • The riddler at the fair stumped everyone with his clever puzzles.
    • The old riddler sat in the corner of the café, challenging customers with brain teasers.
    • She became known as the best riddler in her school after winning the competition.
  2. A character in popular culture, especially a villain in Batman comics and movies, who uses riddles and puzzles to confuse and challenge others.
    • He dressed up as the Riddler for Halloween, complete with a green question mark suit.
    • The Riddler is one of Batman's most intelligent and tricky enemies.
    • In the movie, the Riddler left clues all over the city for Batman to solve.
Synonyms