In 2006, Rowling told an interviewer that Voldemort at his core has a human fear: the fear of death. She said: "Voldemort's fear is death, ignominious death. I mean, he regards death itself as ignominious. He thinks that it's a shameful human weakness, as you know.
Voldemort's greatest fear is death and as a result a boggart takes the form of his own corpse. It is unsurprising that this is Voldemort's biggest fear. After all, he did split his soul up encasing it in various horcruxes just so to keep himself from dying.
Voldemort always feared death – as an 11-year-old he scorned his mother for succumbing and dismissed it as weakness – and his Horcrux journey was all about achieving immortality, keeping himself alive with no thought for anyone else or even his own soul.
Voldemort apparently believes nothing is worse than death; perhaps his greatest weakness is his inability to love. This is because his mother, Merope Gaunt, gave Tom Riddle Senior (Voldemort's father) a love potion. Because Voldemort was conceived under a love potion, he isn't able to feel or express love in his life.
He was insecure and vulnerable, using terror to combat those fears as if making himself terrifying would protect him from everything that he feared. I find it especially convincing that he feared darkness - because darkness is the unknown and you cannot defeat or contest something you don't know or cannot comprehend.
Albus Dumbledore
It is not certain what the specific fear is as he is not fearing the death of his sister as she is already deceased and it is suggested that Dumbledore fears that it was him who directly killed his sister in the conflict or that he fears the loss of control that lead to his sister's sudden death.
Eventually, J.K. Rowling revealed to us that the reason Voldemort is unable to feel love is because he was conceived under the influence of a love potion.
Albus Dumbledore was a brilliant wizard and a wise headmaster who didn't need to resort to dark magic to be respected by his friends and feared by his enemies. Dumbledore is wiser and stronger than Voldemort in every way, from magic and wisdom, to good heart.
Thus, paradoxically, while Harry had to die before Voldemort could, Harry can't die while Voldemort lives. They have a double bond, with Voldemort's soul in Harry and Harry's blood in Voldemort. Dumbledore explains the mystery of why Harry's wand defeated Voldemort even when the latter had Lucius Malfoy's wand.
Grindelwald had more power in the Wizarding World up till the final moments of his life. He had more followers, and they were intensely loyal to him. He conquered more of the globe and could perform more advanced forms of magic.
On Lord Voldemort as a psychopath or sociopath
“There are psychologists who would argue there's really no difference, and in fact, if you consult the diagnostic manual, it would really lump them under one category, antisocial personality disorder.
Voldemort's Return Mirror's Harry Potter's Growth
However, what made him different this time was that Harry's blood meant he was no longer protected from Voldemort's touch. Proving this, he touched Harry's scar, causing him to scream out in pain.
Harry became so enamoured with the spell that he eventually used it to finish off Lord Voldemort. Here's how Harry's relationship with Expelliarmus became his signature – and why that's a good and bad thing.
As is mentioned before, Voldemort has fears. And Dumbledore is one of them. Dumbledore himself, however, seems to be quite fearless. He is not even afraid of Voldemort, even though everyone else in the world of Harry Potter is scared of him.
Harry Potter - Dementors
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.
He also divided his soul into seven Horcruxes to make himself immortal. Albus Percival Wulfric Brian Dumbledore was the only wizard Voldemort ever feared and the only one who could have defeated him in a duel. Albus Dumbledore is the most powerful wizard in the Harry Potter.
When Harry wrestles Draco's “everyday” wand out of his hand at the Malfoy's mansion, he conquers Draco, and therefore the Elder Wand — hidden in Dumbledore's tomb at the time — transfers its allegiance to Harry. Rowling said her American editor suggested the moment when Harry conquers Draco should be more dramatic.
In the end, both were essential to Voldemort's downfall, fulfilling the possibility that both Harry and Neville were, in fact, the Chosen One. While Harry delivered the final blow to destroy Voldemort, Neville destroyed the final Horcrux which allowed Harry to end Voldemort.
Voldemort intentionally made six Horcruxes, but when he used Avada Kedavra on Harry, he unintentionally created a seventh Horcrux. Instead of dying, Lily's love for Harry created a counter 'curse' known as Sacrificial Protection and saved Harry.
Dolores Umbridge's authority – especially her authority over children – is what makes her just so terrifying. In modern-day, she is more of a realistic threat to us Muggles than the Lord Voldemorts of the world.
Severus Snape might have pretended to serve Voldemort (while in fact, as we all know, working as a double agent for Dumbledore), but there's almost no question he was more powerful than the Dark Lord.
Bellatrix was his right-hand woman and when she was finally taken down, he bellowed out in rage at her passing. While she was certainly a powerful witch who earned Voldemort's trust, it's highly unlikely she could have defeated him in combat.
By the time he was Lord Voldemort (despite what I said earlier about the graveyard scene), Tom Riddle had become fully and completely asexual.
By that logic, Voldemort must have been crushing hard on Harry with all the times he tried to “kill” him. After a close examination of Voldemort's actions and his quotes from the books, we've compiled a list of 21 times Voldemort proved he was smitten with Harry.
Voldemort hugged Draco as an improvisation and it wasn't planned. Even Tom Felton (Draco Malfoy) was caught unaware which increased the effect. In Harry Potter style, it was like a welcome for Draco, but as Voldemort had never known love, he didn't know how to hug him very well.