Summary
Dr. Riddles, originally referred to as Professor Riddle, is a tall, elderly American gentleman characterized by a distinctive mustache, a monocle, and elaborate black attire. He wears a top hat that features a floating question mark hovering above it. He frequently boasts about being the "mysterious professor who knows all," a claim that is evidently an exaggeration. A recurring dynamic involves him and Kido, where Kido often explains details based on Dr. Riddles' previous statements, only for Riddles to reveal he was "kidding," leaving Kido with a shocked and displeased expression.
