<P> The translators of the books' foreign editions had difficulty translating the "house" concept; in countries where this system does not exist, no word could adequately convey the importance of belonging to a house, the loyalty owed to it, and the pride taken in prizes won by the house . </P> <P> Gryffindor values courage, bravery, nerve, and chivalry . Gryffindor's mascot is the lion, and its colours are scarlet and gold . The Head of this house is the Transfiguration Professor and Deputy Headmistress, Minerva McGonagall until she becomes headmistress, and the house ghost is Sir Nicholas de Mimsy - Porpington, more commonly known as Nearly Headless Nick . According to Rowling, Gryffindor corresponds roughly to the element of fire . The founder of the house is Godric Gryffindor . </P> <P> The Gryffindor common room is in one of the castle's highest towers, and its entrance is on the seventh floor in the east wing of the castle and is guarded by a painting of The Fat Lady, who is garbed in a pink dress . She permits entry only after being given the correct password, as was distinguished in the third book, when Sirius Black tried forcing entry into the tower, only to be blocked by The Fat Lady after he could not give the correct password . In the first book, Neville Longbottom tends to forget the password and must wait near the painting until other Gryffindors arrive to open the way . </P> <P> Hufflepuff values hard work, patience, justice, and loyalty . The house mascot is the badger, and canary yellow and black are its colours . The Head of this house is the Herbology Professor Pomona Sprout, and the house ghost is The Fat Friar . According to Rowling, Hufflepuff corresponds roughly to the element of earth . The founder of this house is Helga Hufflepuff . </P>

Who are the house leaders in harry potter