Gryffindor is one of the four houses of Hogwarts School of Witchcraft and Wizardry and it was born under Godric Gryffindor, from whom it gets the name. The house especially values courage. Its symbol (animal) is the lion and its colours are scarlet(red) and gold. Nearly Headless Nick is the house ghost. The Gryffindors always rival with the Slytherins.
The Gryffindor Common Room (the place where the Griffindor students spend their time and do their homework) is placed in one of the castle's towers, at the seventh floor. At the door, there is the Fat Lady, or the Lady who is fat. She lets the students in only after they give her the password (which changes for time to time). The Fat Lady is wearing a pink dress. In the room there is a fireplace, many chairs and tables, and two pair of stairs which take the girls and boys to their sleeping rooms.
The head (ruler) of Gryffindor house is Minerva McGonagall.