Visible crew/equipment: As the camera moves in on the bull that is about to be grabbed by the vampire, if you look under the bull, you can see two men hiding behind it. You can see their legs. They are probably there to keep the bull standing still. When it cuts they are gone. (00:26:05)
Continuity mistake: In the beginning after Dr.Frankenstein has awakened his monster he turns around and runs against the window. As he runs you can see a rack of a kind standing in front of the window. When it cuts the rack is gone. (00:00:55)
Answer: Gabriel is the true name of the character described elsewhere as the Left Hand of God, responsible for Dracula's original death. Dracula uses this to try to remind Van Helsing of their history together. The implication is that Van Helsing is actually the archangel Gabriel, credited with (among other things) announcing the pending birth of Christ to Mary his mother, Joseph his father, and Elizabeth mother of John the Baptist.
Phoenix