The Penguin launched on HBO/Max last week, but the original plan was for The Batman to get a spin-off revolving around a corrupt cop in Gotham P.D. during the Dark Knight's first year in the city.
“The idea was that we were going to do a 1970s cop show— something that felt like [Sidney Lumet’s 1981 crime and police drama] Prince of the City,but in the Gotham City Police Department,” Winter said ...