25 things we learned about the making of 'Batman v Superman'

Warner Bros.

"Batman v Superman" is in theaters now. Say what you will about the movie, but no one can claim director Zack Snyder and his production team lack attention to detail. 

Tech Insider went through two making-of books, "Batman v Superman: Dawn of Justice — The Art of the Film" and "Batman v Superman: Dawn of Justice — Tech Manual" to learn about the making of the suits, the filming locations, the gadgets, and more.

Keep reading to see what went into making the superhero movie come to life.

Batman wasn't originally going to be in the movie.

"Originally it was going to be a straight Superman movie," explained Snyder. "One of the ideas was that at the end of the movie, a crate of kryptonite would be delivered to Wayne Manor. That didn't happen, but once Batman was mentioned, he wouldn't go away. It couldn't be undone."

There were over 20 different Bat symbol designs looked at for the chest of the Batsuit.

I think they ended up with one of the three best.

Batman's cowl (the mask he wears) is made up of an outer costume cowl and a tech cowl underneath.

It allows Ben Affleck's Batman to have better control over his neck movements, something which was a problem with previous incarnations of the Batsuit.

"In the past it's been difficult for the actors who play Batman to turn their head, because of the way the cowl is connected to the piece that lays across the shoulders. So that's really the innovation — we were able to create this really thin membrane that allows the actor to look around," Snyder said.