Despite being the main character, Harry is not the most potent wizard in the wizarding community. Sure, he does go on to defeat the greatest dark wizard of all time, but rather than being the consequence of his own brilliance, his victory is more a product of his mother's sacrifice and the encouragement of his companions.
One of the most powerful figures in the Harry Potter universe is Hermione because of her aptitude for learning and her unrelenting need for information. She obviously doesn't act like it, but both in the novels and the movies, she frequently shows that she is.
Mad-Eye Moody is definitely past his prime when he first appears to viewers, as shown by the fact that he spends the vast portion of The Goblet of Fire confined to a chest.`
Following Harry's eventual return, Snape leaves Hogwarts, and McGonagall steps in to defend the institution and its pupils from the Death Eaters. She doesn't hesitate to give in to Voldemort's demands despite being aware of the stakes and the nature of their opponents, and instead stages a genuinely heroic defence that manages to save the majority of the young witches and wizards in her care.
Bellatrix Lestrange is the dark wizard with the most blood on their wand, followed by Voldemort and Grindelwald. She is solely accountable for the deaths of Tonks, Dobby, and Sirius throughout the novels and movies, but it is believed that her actual death toll was much greater. There are also those who she intentionally left alive, of course.
Despite spending the most of his life guarding a child he could not bear to look at, Snape rarely receives the recognition he merits. His courage in doing so is commendable, as is his willingness to put his life in danger by betraying the most potent evil wizard in history. Fortunately for him, his magic was as powerful as his resolve and willpower.
There are one or two important lessons to be learned about the Hogwarts founders even though the books don't go into nearly enough detail to accomplish so. For instance, it's claimed that the four of them were some of history's greatest witches and wizards, and that Slytherin prioritised power above all else.
Although the name of Grindelwald does occasionally appear in the mainline Harry Potter books and films, it wasn't until Fantastic Beasts that fans of the franchise truly understood what the dark wizard was all about.`
It's possible to dismiss the idea that love finally triumphed over Lord Voldemort as a cheesy cliché. But in some respects, it seems appropriate that his collapse was brought about by an unmeasurable and invisible force.
It's often said that Dumbledore was the only wizard that Voldemort ever feared and this likely remained true right up to the former Hogwarts headmaster's final breath.