The Dark Truth Behind Dementors' Existence

The Dark Truth Behind Dementors' Existence

Discover the chilling truth about the Dementors in the Harry Potter universe Learn about their origins, their terrifying attacks, and the one thing that can weaken them

Dementors are a terrifying presence in the Harry Potter franchise, first appearing in the novel (and later the movie) Harry Potter And The Prisoner Of Azkaban. These dark creatures are depicted as floating along in tattered robes, leaving sadness in their wake. While witches and wizards can see them, non-magical humans or Muggles can only feel their effects. Author J. K. Rowling has explained that Dementors were created to symbolize depression, a darkness that feels insurmountable but can be overcome, as exemplified by Harry Potter's own fear and determination to conquer them. But what exactly are these creatures in the world of Harry Potter?

What Are Dementors?

The Dark Truth Behind Dementors' Existence

Dementors are eerie beings that lack sight but possess the ability to sense the emotions of others. They hover in the air and reside in pockets of despair throughout the world. The mere presence of Dementors in an area often leads to a pervasive feeling of discontent. During Voldemort's rise to power, their numbers increased, causing widespread despair and unsettling weather patterns like mist and fog during summer months.

In the Harry Potter series, the Ministry of Magic categorizes Dementors as "non-beings" since they aren't living organisms like other magical creatures. They are more like apparitions or ghouls and are considered amortal rather than immortal. While they cannot die, they do disappear when happiness returns to their surroundings, causing their numbers to dwindle.

Where Did The Dementors Come From?

The Dark Truth Behind Dementors' Existence

While the origins of Dementors remain shrouded in mystery, the Wizarding World has pieced together some information about these dark creatures. Supplementary materials for the Harry Potter franchise have shed light on their existence. What is certain, however, is that Azkaban Island in the North Sea was their home for over five centuries. The Ministry of Magic eventually discovered them and decided to use them as guards for the prison they constructed there.


Ekrizdis, a wizard during the 14th century, created a fortress on an island that would later become known as Azkaban. He surrounded the fortress with Dementors, which were unknown to the rest of the Wizarding World at the time. These creatures were later discovered in the 1700s. Other dark wizards have hired Dementors as guards due to their lack of specific allegiance, as they simply crave human happiness. Dementors do not breed but grow like a fungus, appearing more frequently as they feed on happiness and cause despair.

How Do Dementors Attack?

The Dark Truth Behind Dementors' Existence

Living near Dementors can have a profound effect on people's mood, even without an active attack taking place. The mere presence of these dark creatures can cause feelings of unease and sadness, and at their worst, depression. When Dudley Dursley was attacked in Harry Potter and the Order of the Phoenix, he was left inconsolable, reliving his worst moments. Even his parents couldn't understand what had happened to him. However, a Dementor's attack is far more devastating. Known as the "kiss," the creature attaches its mouth to its victim and sucks out their soul. The person is left a shell of their former self, alive but with no thoughts or reactions to stimuli. In the Harry Potter franchise, a Dementor's kiss is often referred to as a "fate worse than death." It's unclear whether the soul is trapped within the Dementor or simply consumed by it.

What Is A Dementor’s Weakness?

The Dark Truth Behind Dementors' Existence

Interestingly, while Dementors thrive on negative emotions, happiness can also weaken their power. In Harry Potter and the Deathly Hallows, when Harry is brought back to life, his overwhelming joy prevents him from feeling the usual effects of the Dementors. However, this is not a practical solution for witches and wizards as it is unlikely to be a permanent state of mind. Thus, other means of protection must be sought to combat these soul-sucking creatures.

What Is A Dementor’s Weakness?

The Dark Truth Behind Dementors' Existence


The Patronus charm is a powerful tool that can shield a person from the sinister effects of a Dementor. Novice magic users may produce an incorporeal form of the charm, which can slow down a Dementor but not stop it entirely. However, a more experienced wizard can cast a corporeal animal-shaped Patronus that can effectively push Dementors away. It's worth noting that while the Patronus charm repels Dementors, it doesn't actually kill them, but rather acts as a concentrated source of light and happiness against the darkness.

While there may be other magical shields and charms that offer protection against Dementors, the Patronus charm is the most highlighted and effective in the Harry Potter franchise. Throughout the novels, books, and video games, Dementors serve as a recurring threat to the wizarding world.