Slytherin House
One of the four Hogwarts Houses, named after Salazar Slytherin. Slytherin House values ambition and resourcefulness, as well as purity of blood. The House ghost is the Bloody Baron. Its House colours are green and silver and its mascot is a snake. The Head of House is the Potions and Defence Against the Dark Arts professor, Severus Snape. Another Head of House is Horace Slughorn. The Quidditch team is the Slytherin Quidditch Team.
Founder: Salazar Slytherin
House Colours: Green and Silver
Traits: ambition, vanity, traditionalism, cunning, power.
Common Room: Slytherin Dungeon
Ghost: The Bloody Baron
 Common Room
The common room can be found behind a bare, damp stone wall down near the dungeons which opens when you give the password. The password changes regularly and seems to reflect their values. The one time we hear the password it is Pure Blood. The Common Room appears to be under the lake with rough stone walls and ceiling and lit with green lamps.