Considering his profile in the industry and the prominence of the genre, it is remarkable that Leonardo DiCaprio has never been in a comic book movie, but he has come close several times. Thanks to revelations from Zack Snyder, we now know that the Killers of the Flower Moon star and Oscar winner was part of the early casting stages. That's particularly interesting given Timothee Chalamet's confirmation that DiCaprio told him to avoid superhero movies. He's managed it himself, so far, but not because of a lack of opportunities.

https://screenrant.com/leonardo-dicaprio-batman-movie-casting-near-misses/