Here are some possibilities, though none are widely recognized:
* Possible but Unlikely: There might be individuals with the initials "DQ" who are famous in specific fields like academia, business, or local communities. It's highly probable they haven't achieved global recognition.
* Fictional Characters: Beyond Don Quixote, other fictional characters share the initials "DQ," including:
* "D.Q." (De Quincey): A character in "The Name of the Rose" by Umberto Eco.
* "D.Q." (Duane Quigley): A fictional character in "The Simpsons" who was credited as the writer of "The Great Douchebag" song.
It's important to note: "DQ" is not a common name combination, making it unlikely to find famous people with those initials unless they are specifically known for something else.