MOST POWERFUL: WEREWOLF Werewolves will attack any humans they encounter, whether they be friend or foe.
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.
It's about location - Harry Potter's focus was in Britain, by a British author, at British locations, so many of the wizards associated (including the most powerful in the world) would naturally be from Britain.
The Longbottoms
Neville comes from a long-line of pure-blood wizards, although we don't know as much about the individuals as we do with some other wizarding families. What we do know is that both of Neville's parents were pure-blood, as was his gran, Augusta.
Ancient and powerful, the House of Black was the largest and oldest pureblood family in Britain. Its motto, Toujours Pur, or "Always Pure," expressed its members' fanaticism for blood purity, which had led them to marry their cousins for several centuries to avoid "tainting" the family's legacy.
He's a pure-blood wizard, proud Slytherin and Harry Potter's arch rival at Hogwarts. Happy birthday, Draco Malfoy!
Lord Draco Lucius Malfoy (born 5 June 1980) is a pure-blood wizard; the second son and third child overall of Lucius Malfoy II and Narcissa Malfoy (née Black).
Harry James Potter holds half-blood status in Rowling's imagined wizarding world because his mother is Muggle-born and his father is pure-blood. There are three main blood statuses; pure-blood, half-blood, and Muggle-born, which are all methods of determining a witch or wizard's magical lineage.
Godrick Gryffindor, one of the four founders of Hogwarts, and the owner of the legendary Sword of Gryffindor, was absolutely more powerful than Dumbledore— and it's a good thing he was, too, because Dumbledore wasn't around in Hogwarts' early days to keep Godrick's fellow founder Salazar Slytherin in check.
This. Voldemort was the most powerful wizard at that time, if it had been a mere trial of power Harry would have stood no chance. Voldemort would have been much better off had he simply avada-ed him upon sight, or fired any of the numerous dark and deadly spells he must have known really.
Albus Dumbledore
Headmaster Dumbledore's inspired leadership of the Hogwarts School, always encouraging each student to do his or her best, and to tap into their own unique gifts and talents. Also, Dumbledore always had the courage to lead and protect Harry on his quest to defeat Lord Voldemort.
Peter Pettigrew
Though he is accomplished in some ways, he is arguably one of the weakest wizards. Through his time in school he is described as latching on to Remus Lupin, Sirius Black and James Potter as stronger wizards he believed could protect him.
Lord Voldemort
Tom Marvolo Riddle started both Wizarding Wars, created the Death Eaters and killed Harry Potter's parents. We could go on – he was the most dangerous Dark wizard of all time – but we won't.
12 More Powerful: Severus Snape
He was the Half-Blood Prince, as well as the maker of several powerful spells. 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.
Barry Wee Willie Winkle (b. 14 August, 1236) was the oldest known wizard in the 1990s, when he reached the age of 755. To celebrate the occasion, he held a massive party, inviting every wizard and witch he had ever known, a total of thirty million people. It was one of the biggest parties in wizarding history.
Having rendered unknown, shady (and almost certainly magical) services to King William I, Malfoy was given a prime piece of land in Wiltshire, seized from local landowners, upon which his descendants have lived for ten consecutive centuries.
It's debatable whether the Malfoy family fortune is greater than the combined Potter and Black family fortune, but it's safe to say Harry individually has a greater amount of money than Draco.
The Boy Who Lived is many things, including rich. Not only is he the heir to the Potter family fortune, but later inherited everything Sirius owned. Harry is awed at his own wealth in Sorcerer's Stone and wastes no time in delving in, treating his friends to expensive gifts without a second thought.
Actor Tom Felton had his naturally brown hair dyed on a weekly basis to maintain Draco's white-silver locks while shooting. Only in one film, out of the whole series, did he opt for wearing a wig.
The Malfoys are able to avoid serving time in Azkaban, as they provide evidence that helps the Ministry track down the Death Eaters who had fled after the war. It is also probable that, since Narcissa's lie to Voldemort saved Harry's life, the family is pardoned for their crimes.
Specifically, Draco was jealous of Harry. It was easy to miss because Draco didn't often show his emotions, modelling himself on his cold, confident, calculating father, but J.K. Rowling has confirmed that a lot of his enmity towards Harry stemmed from envy.