Dementors

"Dementors are among the foulest creatures that walk this earth. They infest the darkest, filthiest places, they glory in decay and despair, they drain peace, hope, and happiness out of the air around them... Get too near a Dementor and every good feeling, every happy memory will be sucked out of you. If it can, the Dementor will feed on you long enough to reduce you to something like itself...soulless and evil. You will be left with nothing but the worst experiences of your life."

- Remus Lupin to Harry Potter. The Dementors are dark wraith-like creatures that used to work for the Ministry of Magic, to guard the wizard prison Azkaban. Later in the Harry Potter series, they turn against the Ministry and join Voldemort's army. The Dementors are the main antagonists of Prisoner of Azkaban, and are minor antagonists in ''Order of the Phoenix. ''In this movie they look slightly different, since their cloaks aren't long. They also do appear as supporting antagonists in Deathly Hallows. == Appearance == Dementors appear as tall, ominous figures who wear black cloaks, and glide above the ground. Anyone who has seen what is under their hood is in no fit condition to tell what they saw. ==Prisoner of Azkaban== The Dementors are the main antagonists and the main plot elements of the 3rd film. They are sent by the Ministry of Magic to Hogwarts to guard against Sirius Black. Harry encounters a Dementor in the train and during a Quidditch match, undergoing Patronus training in the process. At the end of the year, Harry and Sirius are encountered by every Dementor in the school. Although powerless at first, a stag Patronus(later revealed to be Harry's future self) saves them and repels the Dementors away. After Sirius Black was proved innocent, the Dementors were removed from Hogwarts. ==Order of the Phoenix== The Dementors return as minor antagonists in the 5th film, having sent secretly and illegally by Dolores Umbridge to silence Harry's claims of Voldemort returning. Harry blasts them off with a Patronus charm. ==Deathly Hallows== By the 7th film, Dementors were in free roam, with most having sided with Voldemort and the Death Eaters. They appear shortly when they chase the protagonists as they escape from Umbridge in the Ministry of Magic. Later, in the Battle of Hogwarts, an army of Dementors on Voldemort's side invaded Hogwarts, although they are blasted away by a Patronus charm. ==19 Years later== When Auror Kingsley Shacklebolt became Minister of Magic, Azkaban stopped using Dementors any longer. It is not stated what happened to them, but it can be assumed that, due to a lack of sustenance, they died out. == Powers and Abilities == Dementors can drain the happiness and any other positive emotion out of any area. In doing so, they can trap their victims within their own miserable thoughts. Their presence makes any area cold. When they get close enough to their victim, they perform something called a Dementor's Kiss, where they suck their victim's soul out. The only way to beat a Dementor is to cast a partonus, this patronus can be called by thinking of something happy. Happiness is a Dementor's pure weakness. Though they can't be destroyed, they do spawn like fungi, hinting that they die off on their own. ==Harry Potter theme park== The Dementors also make an appearance in the Harry Potter and the Forbidden Journey ride at the Harry Potter theme park in Universal Studios in Orlando, Florida. In this ride, the Dementors are trying to suck out the soul of the visitors until they get chased away by Harry Potter himself. ==Gallery== Dementor OOTP.jpg|The Dementors as they appear in Harry Potter and the Order of the Phoenix. Shadowy Dementor.jpg The Dementors.jpg Ghostly Dementor.jpg Dementor.jpg Invasion of the Dementors.jpg Swarms of the Dementors.jpg Creepy Dementors.jpg The Dementors at Hogwarts.jpg Army of the Dementors.jpg Dementors DH part 1.jpg