The character's physical appearance has gone through many transformations, with various special makeup effects artists, including Stan Winston, making their mark on the character's design. Tom Savini's initial design has been the basis for many of the later incarnations. The trademark hockey goalie mask did not appear until "Friday the 13th Part III". Since "", filmmakers have given Jason superhuman strength, regenerative powers, and near invulnerability. Some interpretations suggest that the audience has empathy for Jason, whose motivation for killing has been cited as being driven by the immoral actions of his victims and his own rage over having drowned as a child. Jason Voorhees has been featured in various humor magazines, referenced in feature films, parodied in television series, and was the inspiration for a horror punk band. Several toy lines have been released based on various versions of the character from the "Friday the 13th" films. Jason Voorhees's hockey mask is a widely recognized image in popular culture.