While Andy Biersack is a musician in real life (Black Veil Brides), the vocals for songs in the movie were done by Remington Leith, the lead singer of Palaye Royale.
Andy Biersack and Ben Bruce have their own bands. Ben is in a British metalcore band called Asking Alexandria; Andy is in the American rock/metalcore band called Black Veil Brides.
The top of the stairs of the Rainbow Bar and Grill, which are ascended in the film, now display an American Satan movie poster, appropriately enough.
In the scene where Johnny (Andy Biersack) buys a new car, when he gets in and his hand is on the steering wheel, Biersack's real wedding ring is visible.
While Mark Boone Junior's appearance did not change much for his role as music producer Elias Collins, he highly resembles Rick Rubin, record producer and former co-president of Columbia Records. Rubin is the co-founder of Def Jam Recordings and also established American Recordings. With the Beastie Boys, LL Cool J, Public Enemy, Geto Boys, and Run-DMC, Rubin helped popularize hip-hop music. Rubin has also worked with other artists such as Adele, Audioslave, Linkin Park, AC/DC, Kanye West, Johnny Cash, The Avett Brothers, Tom Petty, Justin Timberlake, Metallica, Slayer, System of A Down, Rage Against The Machine, Red Hot Chili Peppers, The Strokes, Limp Bizkit, Kendrick Lamar, Eminem, and Slipknot.