Started by Salazar Slytherin when Hogwarts was first established, this house is the main antagonist of the Harry Potter book series and Gryffindor house's greatest rival in Quidditch any various other wizarding events. The Boys Harry Potter Slytherin Robe Costume features a full length black robe that features the house's silver serpent logo against a green background and a soft inner lining that makes the costume very warm to wear. Many notable characters come from the Slytherin house, such as the Malfoy family, Severus Snape, and the Dark Lord himself, Voldemort. This house is known for its cunning and ambitious nature, which often attributes the house with evil and trickery. This costume is one of the best choices for a Harry Potter themed party and makes a nice contrast in a sea of Gryffindor robes that are sure to be everywhere at any themed party such as this.