One of the major influences on Army of Darkness was Ray Harryhausen’s stop motion animated skeletons. This was both prominent in the stop motion animation of the film and the puppets. At the request of director Sam Raimi, KNB EFX used the “Ray Harryhausen brow” on the puppets which clearly shows the inspired look from Harryhausen’s skeletons. 

Rest in peace Ray Harryhausen. You were a true legend, and you will be missed.