What characters are usable in Harry Potter years 1-4?

The characters that are playable and usable in the Harry Potter: Years 1-4 game are Harry Potter, Hermione Granger, Ron Weasley, Albus Dumbledore, Professor McGonagall, Professor Snape, Rubeus Hagrid, Sirius Black, Remus Lupin, Peter Pettigrew, James Potter, Lily Potter, Voldemort, Bellatrix Lestrange, Lucius Malfoy, Draco Malfoy, Crabbe, Goyle, Pansy Parkinson, Neville Longbottom, Luna Lovegood, Ginny Weasley, Dean Thomas, Seamus Finnigan, Parvati Patil, Lavender Brown, Cho Chang, Cedric Diggory, Viktor Krum, Fleur Delacour,Gabrielle Delacour, Madame Maxime, Igor Karkaroff, Dolores Umbridge, Argus Filch, Peeves, Nearly Headless Nick, Moaning Myrtle, the Fat Friar, the Bloody Baron, the Grey Lady, and Salazar Slytherin.