When was The Riddler character introduced by DC Comics?
Riddler
The Riddler (Edward Nigma or Nygma) is a fictional supervillain appearing in American comic books published by DC Comics, created by Bill Finger and Dick Sprang. He first appeared in "Detective Comics" #140 (October 1948). The character is commonly depicted as a criminal mastermind in Gotham City who takes delight in incorporating riddles and puzzles into his schemes, leaving them as clues for the authorities to solve. The Riddler is one of the most enduring enemies of superhero Batman and belongs to the collective of adversaries that make up his rogues gallery.
Cecil C. Addle
Cecil C. Addle was a comic strip drawn by Ray Collins that appeared in the "Seattle Post Intelligencer" from 1975–1979. The main character, Cecil, was apparently a retired or unemployed person who spent his days on the beach near Seattle, talking with his friend, a duck named "Dipstick". The characters in the comic often discussed political and environmental issues.