Continuity mistake: When Karen is telling Blade about the EDTA and the reaction to vampire blood being energetic, in the first shot Karen is putting the bottle of EDTA down on the table, but in the following wider shot she is still holding the bottle. (01:03:45)
Continuity mistake: When Frost has the head pure-blood vampire on the beach, after he pulls out his first vampire tooth you see blood all over his mouth, but when it shows the close up of him pulling out the other tooth, there is no blood. (01:04:22)
Revealing mistake: When Karen and Whistler start to fire at Frost's men, after they discovered Blade's hideout, Whistler shoots a black guy who has a large bump under his shirt, quite obviously the squib. (01:11:00)
Continuity mistake: When Blade gets back from the park after meeting with Frost and getting serum, he discovers Frost's men have been there, and sees Whistler. When Blade moves the tape, which is in a metal rotating stand, the stand rotates on its swivel, but in another shot it has only moved a little bit and hasn't rotated either. The tape would've been facing the other direction because the stand swivelled, but instead it remains in the same position. (01:12:30)
Continuity mistake: The bloody makeup on Whistler's face and neck changes constantly throughout the scene when he gives his last words. (01:17:10)
Continuity mistake: When Karen frees Blade, she opens the chamber he was in. But in a later shot, when lightning strikes, the chamber is closed. (01:39:49)
Revealing mistake: In the final fight scene, Blade is fighting a bunch of guys. Before the shot goes to Karen looking down at Blade, Blade kicks a guy away, you can see the stunt wire pulling him back. (01:43:05)
Continuity mistake: In the big fight scene in the end between Blade and Frost, the blood smear on Frost's face changes sides a few times. (01:43:55)
Visible crew/equipment: In the scene near the end of the film when Blade regenerates then kicks vampire butt you can see a man who looks somewhat out of place bouncing up and down in the background. (01:44:55)
Continuity mistake: After Blade kills his vampiric mother, he runs with his vest in his hands. Then, suddenly his vest on, unzipped. He jumps down onto the center platform, looks up, and the vest is now zipped. (01:46:40)
Continuity mistake: At the end, when Frost and Blade are fighting, Frost punches Blade in the stomach, making him fly back and hit the wall. If you watch closely, his fist never comes close to hitting Blade. (01:50:53)
Continuity mistake: In the shot where Blade knocks the serum down from the wall, he throws one at Frost, then throws five more at him and finally throws the last one in his head. That's seven shots of serum, but when he catches it behind his back there are only six in the pack. (01:51:20)
Continuity mistake: Right before the sword embeds the marble, it's on the right side of EDTA. When the sword handle opens it's above it. (01:51:30)
Continuity mistake: When Blade is leaving the shop towards the end he fills up 6 phials of EDHD, but he uses 9 phials total. 2 on the 2 people in the hall when he first gets to the building and then 7 more on Deacon at the end.
Continuity mistake: In the House of Erebus, right before Blade jumps off the ledge to fight Frost, you see that Karen is standing on the ledge above everything and Mercury is standing down below on the platform. But when Karen's shooting at her, Mercury is coming down the stairs from above.
Revealing mistake: When Blade uses his booby-trapped sword to knock down the serum from the wall at the end of the movie, you can tell the zoom in of the shot was sped up, as the rotating-timer-thing is spinning quicker than normal, and the screen is vibrating quickly.
Continuity mistake: When Karen tells Blade to take her blood and he does, he eventually releases her and there is just some blood on his bottom jaw. In the next scene, there is blood on his teeth at the top and the bottom.
Revealing mistake: When Blade is fighting Frost's men near the end, Blade kicks an Asian man to the ground. When he hits the ground, you see he hits some sort of mat or pillow under the dirt.
Revealing mistake: When Blade is being put into the chamber so they can siphon his blood, there are straps for his neck and his wrists. He is placed into the chamber and his hands are placed in the wrist restraints, no one reaches for the neck restraint. In the next scene, the strap is around his neck.
Continuity mistake: Frost says near the end of the film that the spirits of the twelve will awaken the Blood God. Fair enough, but when the prophecy is first translated, you hear twenty beeps as pictures of people pop up around the circle, implying that there are twenty people standing around it.
Chosen answer: It would seem Deacon has gathered a lot of strength around himself, in followers of "young" vampires like himself. After he kills Gitano he just abducts all the vampire elders, showing his followers are a lot stronger than the elders are. So they probably couldn't have killed him even if they wanted to, not unless they want to unleash a war. They thought his pursuit of the vampire god was totally pointless, so they let him waste his time and were probably trying to find a way to get rid of him.
lionhead