Revealing mistake: When Hellboy drops the giant cog on Kroenen and kills him, there's a bizarre mistake. As the cog falls towards camera, it sort of half-rotates in mid-air and you can see Hellboy in one of the little gaps for about one second. And you can see him standing above... holding the exact same giant cog that is currently falling towards camera. According to the YouTube series "VFX Artists React," it's likely the result of the VFX program just looping the footage to insert behind the cog.

Hellboy (2004)
1 mistake since 12 Feb '25, 09:25
Directed by: Guillermo del Toro
Starring: John Hurt, Ron Perlman, Jeffrey Tambor, Selma Blair
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Trivia: The BPRD complex was (according to Del Toro) was originally FDR's secret emergency bunker. The library where Professor Broom dies was the president's office and Hellboy's room (with the big vault door) was his fallout shelter, just in case Germany perfected the A-bomb first.
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Chosen answer: Her jewelry does not melt either because the fire wraps around her and shoots outward enveloping her and her clothes and jewelry in a safe environment that allows her to breathe without burning the air going into her lungs. Plus if it burned her clothes it would get an R rating.