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In my opinion on the matter, the ghosts represent the history of hogwarts and how it has been and changed over the years. Plus, a place for them to be for the rest of their death if they wish. I believe that they are there for a somewhat home, and historical reasons.
It did come out handy though having the ghosts there. Moaning Myrtle in COS. Helena Ravenclaw (Grey Lady) in DH.
They might have also been there for entertainment purposes. I don't really believe that there is a huge reason why they're at hogwarts.
Hope this helped.
What else can I help you with?
What house is Hermione grainger in Harry Potter?
Gryffindor, like Harry and Ron (and the rest of the Weasley's)
How many prefects are in each house in the Harry Potter books?
There are six prefects in each house, two for each year.
Which former servant of the Draco malfoy's did harry set free?
Harry Potter set Dobby, the malfoy's house-elf free by giving him socks.
What happens to Ron Wesley's house in Harry Potter and the Half-Blood Prince film?
it dies
What monster in Harry Potter lived in Weasley's attic?
The Weasleys had a "house ghost" that lived in their attic.
How many ghosts have appear in the Harry Potter books?
I think there's a ghost for each house plus one so about five
Why did Harry Potter go after the ghosts?
they live (if you get what I mean) on the same way they did they continue being house ghosts I think he means how did they die. The Bloody Baron killed the Grey Lady, and then was killed himself. Nearly Headless Nick died from execution. The Fat Friar ran away from her mother, Helena Hufflepuff, and died in the woods.
What are the names of the ghosts in harry potter?
The House ghosts are:Nearly Headless NickThe Fat FriarThe Grey LadyThe Bloody BaronMoaning Myrtle is a student that died in the girls lavatory.Professor Binns died on the job and continues to teach.
What team did Harry Potter play on in school?
Harry Potter played for Gryffindor house.
What Harry Potter movie has the Hogwarts kitchen house elves?
harry potter and the goblet of fire
What group is badgers from Harry Potter?
The badger represents Hufflepuff house in the Harry Potter series.
What house was protected by a circle of stone in Harry Potter movies?
harry's parent's house
What is the name of the black's family house elf on Harry Potter?
There is a House Elf and his name is Dobby.
Was Harry Potter's dad in Slytherin?
No, James Potter was in Gryffindor house. Harry's mother was also in Gryffindor.
Where is the green house in Harry Potter?
Slytherin.
What is a house goblin?
dobby from harry potter
Which house does Harry Potter hate?
Harry particulary hates Slytherin.
