Riddler listens to podcasts only.
Batman listens to grunge, black metal
Penguin listens to jazz, big band.
Catwoman listens to r&b, pop & electronic
Alfred listens to classical
Freeze listens to Foreigner’s greatest hit over & over.
Dent listens to classic rock
Gordon listens to soul
Scarecrow listens to spooky folk
Black Mask listens to rap
Bane listens to salsa
Joker listens to a wide variety of weird **** (the stuff that would normally creep you out, he finds hilarious and soothing. Lots of spazzy ****).