7. Mel Gibson
Now this actually makes a bit more sense. Personally, I could picture the suave Mel Gibson as the Caped Crusader, and apparently so did WB. He was their first choice on who should play the character in 1989, and reached out to him on multiple occasions. However, due to his working on Lethal Weapon 2, he ultimately had to turn down the role altogether. It’s a shame really. I would love to see Gibson go up against the Joker in an over-the-top fashion. That would be awesome.