NFL's Mohamed Sanu: Batman's Gonna Hate My New Cleats

It's gonna be a dark night in Cincinnati ... 'cause Bengals wide receiver Mohamed Sanu is planning to rock a sick pair of special Joker cleats during Monday night's game ... TMZ Sports has learned.

You already know Sanu LOVES to rock custom kicks -- and has sported shoes with Iron Man, The Incredible Hulk and Dragon Ball Z in the past.

But now, sneaker artist Kreative Customs tell us Sanu wanted to go with a Gotham theme -- after his nephew gave him the idea to order kicks featuring Bruce Wayne's archnemesis.

Pretty awesome, right???