Box Office Bomb: Budget, $150 million sans marketing costs. Gross: $63 million domestic, $251 million worldwide. As noted below, however, it did better when available on home video.
An earlier draft included an appearance by Chernabog himself in the climactic battle, though he'll be in the sequel if they get the chance.
The same earlier draft included Abigail in the climactic battle, as well as more emphasis on how magic works, different backgrounds for Balthazar and Horvath, and the title of Prime Merlinian being generational rather than once-in-a-lifetime.
Brie Larson auditioned for Rebecca "Becky" Barnes.
Initial plans for the movies would have made Veronica, a former Morganian played by Monica Bellucci, who had a Heel–Face Turn.
For the webcomic
Write What You Know: Some of the Expo Speak makes it blatantly obvious that the author knows what she's talking about, such as when Cooper gets bitten by a monster and Victoria instructs Cooper to not tell the doctors it was a random animal bite due to the complications of having to identify the breed of animal and getting rabies shots.