Batman & Robin

Anthony Hopkins, who was one of Joel Schumacher's other choices for Mr. Freeze, was also considered for the role of Alfred in Batman Begins (2005).

Hulk Hogan was Joel Schumacher's third choice to play Mr. Freeze.

Director Joel Schumacher first realized that George Clooney would make a good Batman after drawing the famous cowl over Clooney's face in an advertisement for From Dusk Till Dawn (1996).

Julia Roberts, Sharon Stone, and Demi Moore were all rumored to be in the running for the part of Poison Ivy, before Uma Thurman was cast.

Joel Schumacher once said in an interview that if Arnold had not wanted to play Mr. Freeze, Sylvester Stallone was his second choice.

In an interview the cast members were asked what item from filming they would like to take home with them. Arnold Schwarzenegger said that he would be taking Mr. Freeze's armor home, Uma Thurman said that she wanted Ivy's floral throne, and Elle Macpherson said that she just wanted a cap or something with the "Batman & Robin" logo before anyone else. When asked, George Clooney said he wanted Elle Macpherson.

During shooting, George Clooney visited his friends on the set of "ER" (1994) in full costume.