There's a Riddler Easter egg in The Penguin that you probably missed – and it will be very familiar to fans of The Batman
The Penguin has now kicked off on HBO, and the first episode of The Batman spin-off is a grisly return to the dark underworld of Gotham. It mostly focuses on Oz Cobb's new bid for power following Carmine Falcone's death, but there is a little subtle tease in there for fans of Matt Reeves' movie.