When Voldemort attempted to murder the infant, a piece of his maimed soul attached itself to Harry Potter. As a result, some of Voldemort's thoughts and abilities were shared with him, until Harry was struck with the Avada Kedavra Curse.
Voldemort wasn't aware of Harry being a pseudo-horcrux because he didn't plan it, and Harry didn't know either until Voldemort “killed” him, but he actually killed the piece of soul kept in him.
Harry Potter's soul was whole and unblemished, but he shared a body with a fragment of Voldemort's soul, a state of being which Dumbledore's silver instrument described as "in essence divided".
Rowling stated that after his death, Voldemort is forced to exist in the stunted infant-like form that Harry sees in the King's Cross-like limbo after his confrontation with Voldemort in the Forbidden Forest. Rowling also mentioned that, despite his extreme fear of death, he cannot become a ghost.
Notably, Voldemort appeared to be entirely unaware of this split, as he later created a seventh Horcrux in his quest to have six, and continued to target Harry Potter despite him now holding part of Voldemort's own soul.
But Harry didn't die, and the reason is rather simple: when Voldemort cast the killing curse, it only killed the piece of his soul within Harry, not Harry himself. Harry then saw Dumbledore in a version of King's Cross station, something that Dumbledore said was probably happening in his head.
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.
Family. Snape's family background is mostly shown in flashbacks during the course of the last three novels. Snape was born to Eileen Prince, a witch, and Tobias Snape, a Muggle, making him a half-blood (hence the name, "Half-Blood Prince").
With no one to claim him as their own, Tom lived in a Muggle-run orphanage where he felt abandoned and unloved. He slowly realized he was different from others and became obsessed with his powers, believing he was unique and elite.
With the destruction of all of his Horcruxes, when Voldemort's Killing Curse rebounded and finally ended his life once and for all, his broken and mangled soul was forced to exist in the stunted form Harry saw in King's Cross, unable to move on or return as a ghost, nor does it have any chance of repairing itself any ...
Riddle's use of Harry's blood (which still had Lily J. Potter's protection) "tethered Harry to life", while Riddle lived. When Riddle was defeated, Harry became mortal once more.
Still, given the fact that splitting the soul into so many pieces makes a wizard vulnerable—and remembering how confident Voldemort was in his Horcruxes in Harry Potter and the Deathly Hallows—it can be deduced that Voldemort believed that the power of seven would stabilize his mutilated soul.
...of the Horcrux, wickedest of magical inventions, we shall not speak nor give direction. This is how taboo the topic of Horcruxes was, not that this stopped Voldemort from endeavouring to have seven pieces of his soul, as seven is usually considered to be the most magical number.
The prophecy is mentioned throughout the series, however, it never exclusively mentions that Harry is The Chosen One and suggests Neville was another option. However, one theory explains why, in reality, this wasn't possible.
In the Harry Potter and the Deathly Hallows movie, Snape showed how much he loved Harry, providing him with his memories and showing that he saw Lily in him, his last words echoing this: "You have your mother's eyes."
He was finally killed by his own backfired Killing Curse after Harry Potter and Albus Dumbledore succeeded in destroying all of his Horcruxes. Unknown to most, however, Voldemort's legacy and bloodline would live on through his daughter Delphini, whom he conceived with his loyal follower Bellatrix Lestrange.
By Harry Potter and the Deathly Hallows, it's a stretch to call Draco a villain anymore. We just watched — or read — him struggle to reconcile his choices and morals in The Half-Blood Prince. He can no longer justify his actions, and is far more aware of the evil he was born and raised into.
The movies follow the books closely enough that they aren't really separate universes, except for the fourth movie. There isn't any truly compelling evidence that Snape is Harry's father, because all the points you raise are explained. Snape hated Harry because Harry reminded him of the man who "stole" Lily.
Although he wasn't turned into a werewolf, he did develop some wolfish tendencies such as a liking for very rare steaks. He married Fleur on 1 August 1997, although their wedding was disrupted by the arrival of Death Eaters following the fall of the Ministry of Magic.
Having willingly sacrificed her life in order to protect her infant son, Harry was placed under magical protection, so that when Voldemort cast the Killing Curse at Harry in turn, the spell backfired, leaving him unharmed (save for a lightning-shaped scar on his forehead) and Voldemort (saved by his Horcruxes) reduced ...
How does Harry Potter come back to life after Voldemort killed him?
Harry can come back to life not only because he had the Resurrection Stone (and the other Hallows) but also because of his choices. Harry chooses to sacrifice himself, chooses to face Voldemort unarmed, and chooses to allow himself to be killed, just as he chooses to return to life.
The prevailing theory has been that Voldemort gradually lost his nose (and humanity) throughout his life due to his exclusive use of Dark Magic. The more Dark Magic he tapped into, the less human he became both figuratively and literally. This was only amplified as he split his soul to create the Horcruxes.
