The "conspicuous" Scott Anderson, 32, was arrested outside the Skydome nightclub by police officers, reports the Coventry Telegraph.
He was caught trying to sell unwanted cocaine on April 23 at around 3am.
"At around about that time they saw the defendant, dressed conspicuously as The Incredible Hulk, hand something to someone who handed money to the defendant," said prosecutor Christopher O'Gorman.
Anderson's defence admitted to Coventry Crown Court that "he couldn't have stood out more".
He was jailed for supplying cocaine and possessing cannabis.
The Hulk is Marvel Comics character Bruce Banner, who transforms into a savage and super-powered green behemoth when angered.
The character has starred in various comics series, several movies and the legendary 1970s television show. He will be played by Mark Ruffalo in the forthcoming Avengers film.