Photo: Warner Bros. Warning: Spoilers ahead for the plot and ending of Weapons . Rarely does a character arrive onscreen as gay-guy-Halloween-costume-ready as Aunt Gladys in Weapons . Decked out in the kind of bright-red wig and generously applied makeup that a circus clown might describe as “a bit much,” Amy Madigan is nearly unrecognizable as the film’s puppet-master antagonist . She is both a threat — a witch who has kidnapped 17 children from the town of Maybrook and transformed other