Trey Butler, Whitney Walker, and Brian Stephenson ran through their lines in each scene as Batman, Harley Quinn and the Joker for the cast and crew each morning on set.
John-Gregory Brunson ate so much food while shooting a scene that he was sick to his stomach for two days during production.
The role of Young JB was recast during production.
The fictional movie within Broken Chain playing at the local theater "The Pontoon Captain" is a tribute to a college friend of director Brian Stephenson.
Will Harper's name is a tribute to two more college friends of Brian Stephenson's. Both Brian Stephenson and Trey Butler also attended Jacksonville State University.