rating and thought of things they could substitute for  the blood. While filming the fight between Hellboy and the monster  in front of the people in the subway, actor Ron Perlman (qv)  suggested that Hellboy could grab a gumball machine and start  beating the monster over the head with it, with the flying gumballs  standing in for the blood. Instead, Hellboy rips a payphone off the  wall and beats the monster over the head with the phone, with the  coins that go flying out standing in for the blood.