Take a look over the list :

Canon List

Taken
Reserved
Main Character

Gryffindors

• Abercrombie, Euan
  
• Bell, Katie
  
• Brown Levander
  
• Creevy, Colin
  
• Finnigan Seamus
  
• Granger, Hermione
  
• Hooper, Geoffrey
  
• Johnson Angelina
  
• Jordan Lee
  
• Kirke, Andrew
  
• Longbottom Neville
  
• McDonald, Natalie
  
• Patil, Parvati
  
• Potter, Harry
  
• Sloper, Jack
  
• Spinnet, Alicia
  
• Thomas, Dean
  
• Weasley, Fred
  
• Weasley George
  
• Weasley, Ginny
  
• Weasley Percy
  
• Weasley Ronald (Ron)
  
• Wood Oliver
  
  
  
  Slytherins
  
• Baddock, Malcom
  
• Bletchley, Milesr
  
• Bole, (Pick First Name)
  
• Bulstrode, Millicent
  
• Crabbe, Vincent
  
• Derrick (Pick First Name)
  
• Flint, Marcus
  
• Goyle, Gregory
  
• Higgs, Terrence
  
• Malfoy, Draco
  
• Montague, (Pick First Name)
  
• Nott, Theodore
  
• Parkinson, Pansy
  
• Pritchard, Graham
  
• Pucey, Adrian
  
• Warringthon, (Pick First Name)
  
• Zabini, Blaise
  
  
  
  Ravenclaws
  
• Ackerly, Stewart
  
• Boot, Terry
  
• Btadley, (Pick Firsy Name)
  
• Brocklehurst, Mandy
  
• Carmichael, Eddie
  
• Chang, Cho
  
• Clearwater, Penelope
  
• Corner, Michael
  
• Davies, Roger
  
• Edgecomb, Marietta
  
• Goldstein, Anthony
  
• Lovegood, Luna
  
• Patil, Padma
  
• Quirke, Orla
  
• Turpin Lisa
  
  
  
  Hufflepuffs
  
• Abbptt, Hannah
  
• Bones, Susan
  
• Branstone, Eleanor
  
• Cauldwell, Qwen
  
• Finch-Fletchley, Justin
  
• Macmillian, Ernie
  
• Madley, Laura
  
• Smith, Zacharias
  
• Stebbins, (Pick First Name)
  
• Summers, (Pick First Name)
  
• Whitby, Kevin
  
• Zeller, Rose
  
  
  
  Professors
  
• Professor Binns
  
• Albus Dumbledore(Head of Order, Headmaster of Hogwarts)
  
• Argus Filch
  
• Professor Flitwick
  
• Professor Grubbly-Plank
  
• Rebus Hagrid
  
• Madam Hooch
  
• Professor Lockhart
  
• Remus Lupin(Order Member)
  
• Professor McGonagall (Order Member)
  
• Alastor Moody (Order Member, Auror)
  
• Madam Pince
  
• Madam Pomfrey
  
• Professor Snape (Death Eater, Professor, and Order member)
  
• Professor Sprout
  
• Professor Trelawney
  
  
  
  Order Member
  
• Sirius Black
  
• Dedalus Diggle
  
• Elphias Doge
  
• Arabella Figg
  
• Mundungus Fletcher
  
• Rubeus Hagrid
  
• Hestia Jones
  
• Remus Lupin
  
• Alastor Moody
  
• Sturgis Podmore
  
• Bill Weasley
  
• Charlie Weasley
  
• Molly Weasley
  
  
  
  Death Eaters
  
• Lord Voldemort AKA Tom Riddle
  
• Alecto, (Pick First Name)
  
• Amycus, (Pick First Name)
  
• Avery, (Pick First Name)
  
• Crabbe, (Pick First Name)
  
• Bartemius Crouch Jr
  
• Antonin Dolohov
  
• Gibbon, (Pick First Name)
  
• Goyle, (Pick First Name)
  
• Fenrir Greyback
  
• Jugson, (Pick First Name)
  
• Igor Karkaroff
  
• Bellatrix Lestrange
  
• Rabastan Lestrange
  
• Rodolphus Lestrange
  
• Jessica Riddle Phoenix Member
  
• Walden McNair
  
• Lucius Malfoy
  
• Narcissa Malfoy
  
• Mulciber, (Pick First Name)
  
• Nott, (Pick First Name)
  
• Peter Pettigrew
  
• Augustus Rookwood
  
  
  Ministry
  
  
• Ludo Bagman
  
• Bartemius Crouch Senior
  
• Cornelius Fudge
  
• Rufus Scrimgeour
  
• Kingsley Shacklebolt (Order Member)
  
• Nymphadora Tonks (Order Member)
  
• Dolores Umbridge
  
• Arthur Weasley (Order Member
  
  
  Non-Humans
  
• The Bloody Baron
  
• Dobby
  
• The Fat Friar
  
• Firenze
  
• Grawp
  
• The Grey Lady
  
• Kreacher
  
• Moaning Myrtle
  
• Nearly Headless Nick
  
• Peeves
  
• Winky
  
  
  
  Others
  
  
• Fleur Delacour
  
• Dudley Dursley
  
• Petunia Dursley
  
• Vernon Dursley
  
• Viktor Krum
  
• Narcissa Malfoy
  
• Olympe Maxime
  
• Rita Skeeter
  

If you won't be active the character will be free!!!