T-Rex: One day Batman was in the Batcave and was like, "Man, The Riddler's real name LITERALLY is 'Edward Nigma'. E. Nigma. And Mr. Freeze is ACTUALLY a guy named 'Mr. Fries'".

T-Rex: "He pronounces it like 'Freeze', OBVIOUSLY", he added!

T-Rex: "Harley Quinn," he continued, "sounds like 'harlequin' which matches her clown theme, but is based on her ACTUALLY GIVEN AT BIRTH real name, 'Harleen Quinzel'." He sighed. "After a certain number of these - " he brooded, then stopped, suddenly fully alert at his bat computer.
T-Rex: "No," he whispered. "It couldn't be that easy."

Utahraptor: What'd Batman do then?
T-Rex: He started looking up names based on other bad guys!

T-Rex: He never knew Bane's real identity, but after finding a beefed-up wrestler in Gotham named "Bay Aynne", he started to figure it out. Before you knew it, "Clayton F. Ace", "Kell R. Kroc", and "Cal Enderman" were all in jail. Crime was done, the end!

T-Rex: "In retrospect", Batman said, "Dr. Hugo Strange was a gimmie".