Hufflepuff

"Hufflepuff, founded by Helga Hufflepuff, values hard work, loyalty, tolerance, and fair play above all else. The house mascot is the badger, and canary yellow and black are its colours.Hufflepuff corresponds roughly to the element of earth.

The founder of the house is Helga Hufflepuff

The Hufflepuff dormitories and common room are located somewhere in the basement (corresponding to earth), their entrance found through a still-life painting that is somewhere near the kitchens. You must give a password to the painting to enter. The Hufflepuff common room is filled with yellow hangings and fat armchairs and it has little underground tunnels leading to the dormitories, all of which have perfectly round doors, like barrel tops (very much like a badger sett)."