There are a ton of magical elements in the Wizarding universe of Harry Potter that define the characters. Their Patronuses define them as much as their Hogwarts Houses and it's allowed many fans of the series to find their own versions of these to feel a little more at home in the world.

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But whether one identifies as a Gryffindor or a Slytherin and whether their Patronus is a stag or an otter, they all have the same thing in common: they all fear. In Harry Potter, fear manifests in the form of Boggarts. While the main characters' Boggarts are well known, the Harry Potter franchise is still a deep dive that shines light on the true nature of Boggarts.

Harry Potter - Dementors

Dementors above Hogwarts

Boggarts come into play in a major way in Harry Potter and the Prisoner of Azkaban. It is in this story where Dementors are also a major factor for the first time and it's no surprise that they are Harry's biggest fear.

They suck one's soul out and seem to be the embodiment of terror and hopelessness in the world. It's a perfectly reasonable fear for Harry to have (and later develop a patronus for).

Ron Weasley - Spiders

Ron and Harry look scared in the Chamber of Secrets

Anyone familiar with Harry Potter and the Chamber of Secrets knows just how much Ron fears spiders (he is also perfectly justified to do so). It's no surprise that the next story brings giant spiders back to Ron's source of horror.

They say the best way to conquer one's fear is to face it. But Ron came face to face with Aragog and still nearly lost his mind during Lupin's Boggart lesson. Some phobias cannot be erased.

Hermione Granger - Test Failure

Hermione pointing her wand at Malfoy in Harry Potter

Rounding out the main trio of the Harry Potter franchise, Hermione's fear is a bit more abstract than Harry's and Ron's. She is petrified of failure. Specifically, she's petrified of failing her various academic tests.

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Fortunately, there is a spell to be rid of Boggarts: Riddikulus. When Hermione uses this spell, Professor McGonagall shifts from telling Hermione that she failed to telling Hermione that she'd won a prestigious award.

Molly Weasley - Her Family Dead

The Weasley family posing for a photo in Harry Potter

Molly Weasley is not necessarily one of the ten biggest characters in Harry Potter, but her Boggart is crucial to understanding many of the motivations of the Weasley family. Her biggest fear is seeing her entire family dead.

Tragically, this would partially come to pass when Fred Weasley died. At the very least, Molly never had to see everyone she loved dead. It doesn't make it easier to lose Fred, but it does show that her most palpable worries were still staved off.

Neville Longbottom - Professor Snape

Alan Rickman as Severus Snape Taking the Form of Nevilles Boggart

When Neville is sent to confront a Boggart during Lupin's third-year lesson, he sees Professor Severus Snape. No student should fear their teacher, but it certainly makes sense that if Neville would fear anyone, he'd fear Snape.

Neville is always grappling with standing up to authority in his life. One of the biggest steps came when Neville used Riddikulus to turn Snape's wardrobe into mirroring his grandmother's.

Dumbledore - Ariana Dumbledore

Ariana Dumbledore's portrait in Harry Potter and the Deathly Hallows Part 2

Dumbledore tends to be quite secretive about his inner feelings. After all, he claimed to see a pair of socks in the Mirror of Erised when Harry asked him back in Harry Potter and the Philosopher's Stone.

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However, Dumbledore's Boggart reveals a deep inner truth within the former Headmaster of Hogwarts. He fears the lifeless body of Ariana Dumbledore, his sister, with who he associates his biggest regrets. Dumbledore was far from perfect and this Boggart showed how flawed a hero he was.

Remus Lupin - A Full Moon

Lupin howling at the moon in Harry Potter

It only makes sense that Lupin, who introduced Boggarts to his students, would eventually give the pay-off of showing his own Boggart. It just happens to be a full moon.

It's not that he's afraid of rocks in space. Rather, Lupin fears what the full moon represents. With full moons come his transformation into a werewolf. He associates shame and fear with this idea and it results in a heartbreaking Boggart.

Voldemort - His Downfall

Believe it or not, Voldemort has many things he fears, as well. Obviously, Harry gets under his skin, but Voldemort's actual Boggart is his own downfall.

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Nothing scares Lord Voldemort more than the thought that he can die. It's why he created Horcruxes and made a play for immortality. He is always running away from his biggest fear, which, in a way, is the idea that he can fear no more.

Draco Malfoy - Voldemort

Voldemort hugs Draco Malfoy in Harry Potter

Much of what is known about the characters' Boggarts comes from the video game, LEGO Harry Potter: Years 1-4. In this game, it becomes clear that Draco Malfoy's Boggart is Lord Voldemort.

Draco's fear of Voldemort likely comes from different reasons than others have. Most fear Voldemort taking over the world. Draco fears Voldemort intimidating and manipulating the Malfoy family.

Rubeus Hagrid - Voldemort, Too

It's no surprise that Hagrid also fears Voldemort the most. In fact, a great many characters are revealed, in this aforementioned video game, to be afraid of Voldemort the most. Hagrid is no exception.

Hagrid leads with love and has a big heart, so it's no surprise that someone as evil as Voldemort would be his biggest fear. It also speaks to Hagrid's courage that he faces down this fear when it is manifested tenfold.

NEXT: Harry Potter: The 10 Scariest Monsters & Magical Creatures, Ranked