 While it is not mentioned in the film, Parrys name is short for  Parsifal, the "pure fool" and legendary knight of the Holy Grail.  Parry brings redemption to Jack Lucas just as Parsifal brings  redemption to the Fisher King Amfortas. Also, like Parsifal, Parry  does battle with a Red Knight. In still another parallel, Parry  experiences a cosmic awakening after kissing Lydia, just as Parsifal  experiences a cosmic awakening after kissing the beautiful Kundry.