Skeeter, Rita - unethical, nosy Daily Prophet reporter, an Animagus
Bludger - jet-black Quidditch ball that tries to knock players off their brooms
under water, looks like slimy, grayish-green rat tails
Leaky Cauldron - pub and boarding house and entrance to Diagon Alley
Ravenclaw House - flag is bronze eagle on blue field, house of witty and eager learners
Sorting Hat - patched, frayed, and dirty, assigns new students to the four houses with a song