Jim Corrigan was a detective before he was known as The Spectre. In his previous origin tale, he was a detective for the New York police who infrequently showed mercy or compassion to criminals.
A list of the top detectives in DC Comics would be incomplete without a character named Detective. Detective Chim is Bobo T. the chimpanzee.
Before DC Comics' 2011 reboot, Ralph Dibney was one of that series' tragic heroes. He was the Elongated Man, a Justice League member of the lower echelon with the ability to stretch his body to amazing lengths.
J'onn J'onzzz was a police detective on Mars before coming to Earth, hence the name "Manhunter."
In DC Comics, John Constantine is a distinctive detective because he focuses almost entirely on paranormal investigations.
One of the few detectives in Gotham City who was always doing the right thing was Renee Montoya, a police officer.
In Gotham City, there is one police officer who will never take a bribe, ignore criminal activity, or deviate from his moral principles.
It should not be surprising that the next two on this list were trained by the World's Greatest Detective when it comes to great detectives in DC Comics.
Dick Grayson is still alive, despite the fact that some people might regard Tim Drake as the greatest detective to ever don the Robin suit.
Batman is not referred to as the "World's Greatest Detective" by accident. His best stories are unquestionably those in which he must use his detective abilities to thwart criminals and bring a case to a successful conclusion. He made his debut in Detective Comics.