Mayor Hüseyin Kalkan of Batman, an oil producing community in southeastern Turkey, is suing film director Christopher Nolan for stealing his city’s name in the superhero’s latest big box office adventure, The Dark Knight.

The Turkish official is seeking royalties in his legal claim over the use of the name, which he says was used without the city’s permission, the British Telegraph reports.

“There is only one Batman in the world,” he said. “The American producers used the name of our city without informing us.”

The mayor says he can produce evidence proving that the town’s origins predate the 1939 debut of the DC Comics hero.