Barbara Kean (Erin Richards) suggests they attach a little chainsaw to Butch Gilzean's (Drew Powell) stump. This is a reference to Evil Dead II (1987) and Army of Darkness (1992), wherein the character Ash (Bruce Campbell) cuts off his hand and replaces it with a chainsaw. Jessica Lucas, who plays Tabitha Galavan, starred in Evil Dead (2013) a remake of The Evil Dead (1981).
In one scene, Nathaniel Barnes asks Gordon, "Do I look like I'm joking?" This was what Jack Nicholson's Joker asked Vicky Vale (Kim Basinger) during the museum scene in Tim Burton's Batman (1989)