dementors can speak fluent English and so they just talked like you and I would.
Note: It's not clear if they can actually talk, but they seem to more or less understand human speech.
No, they cannot.
No.
Muggles see an old ruin with signs telling them to keep out and that it's dangerous.
If you remember, they go through Platform 9 3/4, so they're in a different place. No muggles are around.
The dementors make him remember of his past when voldemort killed his parents
Yes, the dementors join Voldemort in Harry Potter and the Deathly Hallows.
Dementors are in Part Two during the Battle of Hogwarts .
Muggles see an old ruin with signs telling them to keep out and that it's dangerous.
Very vague. If you're referring to Order of the Phoenix, Dudley was hurt because of the dementors. They're foul creatures that feed on every happy thought you have. Even Muggles who cannot see them feel their presence, and are affected by them. Dudley was experiencing the after-effects of a dementor attack.
All around us. But Muggles are oblivious to it and the goings on in the Wizarding World. As Stan Shunpike says: "Muggles don't see nufin' do they?"
Muggles. Ordinary people are referred to as Muggles.
The Dementors Converge was created in 2004.
Since muggles are non-magical beings then yes, muggles do exist. However, they are not called muggles, they're just real people.
No, dementors are foul creatures. There are no males or females.
You have to be a witch or a wizard, and if you are then you just go to London and look for it. Muggles can't see it.
If you remember, they go through Platform 9 3/4, so they're in a different place. No muggles are around.
No, dementors don't live in California because they don't exist.
Dementors don't actually exist so no there won't be.
Foul creatures called "dementors". that the minister of magic own