By the time "Freddy vs. Jason" entered production there had been ten previous "Friday the 13th" films. Make-up effects artist Terezakis wanted to put his own mark on Jason's look—he wanted Jason to be less rotted and decomposed and more defined, so that the audience would see a new Jason, but still recognized the face. Terezakis tried to keep continuity with the previous films, but recognized that had he followed them too literally, then "Jason would have been reduced to a pile of goo." Ronny Yu wanted everything surrounding the hockey mask to act as a frame, making the mask the focal point of each shot. To achieve this, Terezakis created a "pooled-blood look" for the character by painting the skin black, based on the idea the blood had pooled in the back of his head because he had been lying on his back for a long time. As with other make-up artists before him, Terezakis followed Savini's original skull design, and aged it appropriately.