Batman v Superman: Dawn of Justice is a 2016 American superhero movie featuring the DC Comics characters Batman and Superman. Directed by Zack Snyder, it’s the second installment in the DC Extended Universe, following 2013’s Man of Steel. Take a look below for 30 more fun and interesting facts about Batman v Superman: Dawn of Justice.

1. The movie was written by Chris Terrio and David S. Goyer, and features an ensemble cast that includes Ben Affleck, Henry Cavill, Amy Adams, Jesse Eisenberg, Diane Lane, Laurence Fishburne, Jeremy Irons, Holly Hunter and Gal Gadot.

2. Batman v Superman: Dawn of Justice is the first live action movie to feature Batman and Superman together, as well as the first live action cinematic portrayal of Wonder Woman.

3. In the movie, criminal mastermind Lex Luther manipulates Batman into a preemptive battle with Superman, who Luthor is obsessed with defeating.

4. Following a strong debut that set new box office records, the movie experienced a historic drop in its second weekend and never recovered.

5. Despite turning a profit, it was deemed a box office disappointment and received generally unfavorably reviews from critics for its dark tone, screenplay and pacing.

6. Ben Affleck gained an additional 20 pounds of muscle and reach eight percent body fat for his role as Batman.

7. In the movie, Batman wears a voice modulator in his suit to electronically alter his voice. After the casting of Ben Affleck in the role, this was an idea that had been suggested by his friend, director Kevin Smith, as he felt that Affleck’s natural speaking voice was too high pitched for Batman.

8. The batsuit that Ben Affleck wars is based on Batman’s suit in the comic book “The Dark Knight Returns,” written by Frank Miller, and published in 1986.

9. Superman only had 42 lines of dialogue throughout the entire movie.

10. Ben Affleck stated in an interview that he had asked if he could have the batsuit when filming was complete. The producers said yes, but that he would have to pay $100,000 to keep it. Affleck quickly changed his mind, and asked if he could just take a picture with it instead.

11. According to Ben Affleck, he was surprised when he was offered the Batman role, and was at first hesitant to commit to it. He was won over after a meeting with Zack Snyder, who pitched Affleck his vision of Batman, and sowed him concept art for the movie.

12. Costume Designer Michael Wilkinson put Amazonian writing into Wonder Woman’s suit design, similar to how Kryptonian writing was put into Superman’s suit design.

13. Jimmy Fallon once asked Ben Affleck what his daughters thought of him being Batman and he said, “They don’t care. All they want to watch is Frozen.”

14. Jeffrey Dean Morgan was considered for the role of Batman. He was subsequently given the role of Thomas Wayne, Bruce Wayne’s father.

15. There is a Riddler style question mark graffitied in one of the pillars of Wayne manor.

16. Superman’s suit is considerably brighter, with the blue of the suit being lightened to suit the comic version. The yellow background behind the “S” has been made into a bright gold. Certain patterns in the suit have changed as well, notably on the “S”.

17. When Batman has been gathering newspaper clips about Superman, a picture is seen where Superman is lifting a car, about to smash it against a rock. The picture is a photo version of the cover of Action Comics #1 from 1938, Superman’s debut.

18. According to Tao Okamoto, Jesse Eisenberg changed several of his lines, causing some of the actors’ reactions to be genuine.

19. Senator Patrick Leahy of Vermont makes a cameo appearance as Senator Purrington. It’s the fourth live action movie for the senator, and he’s faced four different Batmans: Val Kilmer, George Clooney, Christian Bale and Ben Affleck.

20. Alfred’s line about an empty wine cellar is taken directly from the graphic novel “The Dark Knight Returns.”

21. After seeing his performance in Cloud Atlas, the studio wanted Tom Hanks to portray Lex Luthor.

22. The producers declared that Batman v Superman: Dawn of Justice is the first DC Comics movie that opens up to a cinematic universe for its heroes.

23. In the cyborg scene, Dr. Stone refers to the computer as the Mother Box. The Mother Box is a super computer that is used on Apokalips, which is ruled by Darkseid, a major enemy of the Justice League.

24. The glasses Henry Cavill wears as Clark Kent are made by the British spectacle designer Tom Davies. Apparently, Michael Wilkinson found most glasses sat too high on Cavill’s face, because he has a high bridge. They sought out Tom Davies, who makes bespoke glasses, to design a one-off pair of glasses for the job.

25. At his absolute peak during the process of training for the movie and filming it, Henry Cavill reached a size of 220 pounds. However, he didn’t remain at that size for the entire duration of the shoot, or the training.

26. Michael Wilkinson deliberately made the batsuit out of cloth, removing all traces of armor, saying, “Our Batman’s power comes fro his incredibly physical strength and fighting skills.”

27. At the beginning of the movie, when young Bruce Wayne runs from his parents’ graves, he and the camera pass a tombstone with the name Solomon Grundy, who’s a villain in the comics.

28. Many of the new cuttings on Wallace’s wall, are events which were featured in the Christopher Reeve Superman movies.

29. When Wallace visits the wall etched with the names of the people who died during Superman’s battle with Zod, most of the names on the wall are the names of crew members who have worked on Zack Snyder movies.

30. During the opening battle in Metropolis, a grey horse is seen passing Bruce Wayne in the rubble. In the comic “The Dark Knight Returns,” Batman is seen riding a grey horse.