Lucius Malfoy had a strong dislike of Albus Dumbledore. This is due to two reasons – Dumbledore believed in Muggle rights which contradicted Malfoy's pure blood beliefs. In addition, Lucius was a Death Eater, so he believed that Lord Voldemort was a much more powerful wizard than Dumbledore.
So, during the summer between his fifth and sixth years at Hogwarts, Draco Malfoy was tasked with the assassination of Albus Dumbledore to restore his family to Voldemort's good graces. Also at this time, Draco was branded with the Dark Mark.
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.
Despite being a valued Death Eater in the days before Voldemort fell following his attack on baby Harry, Lucius stumbled out of favor with the Dark Lord when he squandered Riddle's diary (secretly a horcrux) in Chamber of Secrets and failed to obtain the prophecy in Order of the Phoenix.
Why? The main reason is that Lucius failed to retrieve the prophecy from the Ministry of Magic, put that on top of all the other times Lucius failed, and it leads to him losing any clout he once carried within the Death Eaters. Lucius did that for his own benefit - he was trying to discredit Arthur weasley.
Narcissa's greatest moment, however, was when she chose to betray Voldemort in Harry Potter and the Deathly Hallows. Not knowing whether Draco was alive or dead, Narcissa chose to lie to the Dark Lord rather than risk losing her son.
Narcissa Malfoy's Very Dangerous Lie
But she was also a mother, which meant she was willing to risk everything to make sure her son was safe. When Harry survived Voldemort's Killing Curse for the second time, Narcissa pretended he was dead so she could get to Draco.
the malfoys hate the weasleys for two reasons : 1) their profound support for dumbledore order of the phoenix &and they were against dark lord ! 2) they unlike the malfoys were open to muggles being in the wizarding world ,they hated the fact that weasleys were friendly , supportive and loved the muggles .
Bellatrix and Lucius also fought along during the Battle of Malfoy Manor, where they argued about who would call Voldemort when they caught Harry Potter. During the Battle of Hogwarts, Bellatrix was eventually killed by Molly Weasley, while Lucius and his family were reformed, as they regretted about joining Voldemort.
Voldemort had waged psychological warfare on the Malfoys, and knowing that he held total power over them- he fully took advantage of his situation. He wielded his power to the point that they no longer wanted to follow him- but they were in too deep.
Finally, Lucius, Narcissa, and Draco never fled Hogwarts with the other antagonists and losers. In The Deathly Hallows novel, the Malfoys defect from Voldemort's army, betraying the other Death Eaters.
Draco had several reasons for lying to Bellatrix, including the fact that he was never a bad person. Moreover, he no longer found working for the Dark Lord appealing and hated how Voldemort treated his family. He did not intend to harm anyone and believed Harry was the only person capable of defeating Voldemort.
A Professor at Hogwarts School of Witchcraft and Wizardry, Snape is hostile to Harry due to his resemblance to his father James Potter, who bullied Snape during their time together at Hogwarts. As the series progresses, Snape's character becomes more layered and enigmatic.
However, Draco was ordered by Voldemort to kill Dumbledore. Lestrange saw this as an opportunity to test Snape's loyalty and while making this vow to always watch over Draco, Lestrange forced Snape to agree to killing Dumbledore himself in case the youngster was unable to do so.
However, the prophecy went on to say that Voldemort would mark the child as his equal, choosing the boy that he believed would be the most dangerous to him. Dumbledore believes Voldemort chose Harry because Harry was a half-blood, just like Voldemort.
For all intents and purposes, this act only solidified Harry's suspicions that Snape was working against Dumbledore the entire time. But there were parts of the story Harry didn't know, including that Dumbledore was already dying and had asked Snape to kill him when the time was right.
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.
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. Thats why they had the awkward hug.
Isaacs brings up Lucius' disheveled appearance in Deathly Hallows, raising the possibility that the Malfoy patriarch had begun drinking too much. The way Isaacs saw it, Lucius was in a no-win situation. Given everything he'd done, the man no longer had a place on either side of the war.
It proves that Snape cares deeply for the Malfoy family, going as far as offering his help by way of an Unbreakable Vow. What can we learn from this about Snape's loyalties, then? It says that, no matter what side he is on, one thing is clear: Snape is very loyal to his friends.
The reason he never gave them money is the same reason he told Fred and George not to tell their parents that Harry gave them the money to start their shop. It's because the weasleys wouldn't have accepted the money and if they did, they would probably do everything they could to pay him back.
Some pure-bloods were considered “blood traitors” for not only being unbiased about blood purity and towards Muggles, but for showing outright fondness and admiration for the Muggle world. The Weasleys are known for not supporting the notion of blood purity and for associating with Muggles and Muggle-borns.
Draco says she suffers from a “blood malediction,” which ultimately ends up killing her the summer before Scorpius's third year. While it isn't clear that Astoria's and Nagini's conditions are the same, Draco's description of her illness seems to match up with new information from Rowling's tweets.
This nuance was lost on Lord Voldemort, who wrongly assumed Severus Snape held the Elder Wand because he was Dumbledore's killer, when in reality Draco had disarmed Dumbledore before Snape arrived on the scene, making Malfoy the wand's true new owner.
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.