Continuity mistake: When Major Ben Daimio is saying the line about putting Hellboy back in his cage, he's walking towards an elevator door mid sentence and looking at the door. The camera cuts to a different angle as he finishes this sentence and suddenly his head has turned 180° with him looking at Hellboy instantly between shots. (00:41:55)
Hellboy (2019)
1 continuity mistake
Directed by: Neil Marshall
Starring: Milla Jovovich, Ian McShane, David Harbour, Daniel Dae Kim
Revealing mistake: When the elevator begins to fall, Hellboy raises his left arm, revealing that David Harbour's arm is not painted red from the wrist down. (01:45:00)
Trivia: Doug Jones, who played Abe Sapien in the prior Hellboy films, was offered a chance to do a cameo but was unable to due to scheduling conflicts. A teaser at the end of the film suggests the discovery in a tank of a gill-man, possibly Abe Sapien for a potential sequel.