Dumbledore

However, Dumbledore fell from this fantasy after his sister Ariana Dumbledore was killed during a duel between himself, Aberforth Dumbledore, and Grindelwald.

Initially, Potter is surprised to see Dumbledore, because Dumbledore died in the previous book.

Dumbledore gets to be young: Love relationship with Grindelwald aside, fans should expect a different Dumbledore than they know from his time with Harry.

The revelation that Credence Barebone is really Aurelius Dumbledore, brother of Albus Dumbledore, is one that is difficult to reconcile with the canon.

By the end of the book, Dumbledore and Harry set out to the cave where Dumbledore believes a Horcrux resides.

Dumbledore is conversing with Draco about the plot to kill him, when several other Death Eaters enter the tower and try to persuade Draco to kill Dumbledore.

Dumbledore makes a robotic copy and sends it into the creature's stomach, distracting the creature long enough for Dumbledore, Charlene and the scoutmaster to escape.

HBP Ch.27 Harry, who is paralysed under his invisibility cloak by Dumbledore for his own protection, witnesses the kill, and is released upon Dumbledore's death.

After Dumbledore's passing, Snape was instated as Headmaster — an appointment that was clearly arranged by Voldemort, who was very much in control at this point in time.

Albus Dumbledore explained in that Voldemort had a different plan in mind for his diary Horcrux than the others, and Lucius Malfoy was supposed to be a part of it.

All of this provided context for the man that Dumbledore was when Harry knew him and brought to light the series' theme that even heroes aren't perfect.

Both Harry and Dumbledore were the first owners of the Elder Wand who had no intention of truly wielding its power—therefore, they were the only ones who truly deserved it.

Considered a magical prodigy, Dumbledore demonstrated his exemplary mastery of magic since a young age.

Dumbledore knew he wouldn't be able to destroy the horcruxes himself, so he inspired Harry to carry the torch without making things overwhelming, hopeless, or unattainable.

He was brought there by Rubeus Hagrid at the command of Albus Dumbledore, but the giant had revealed it hadn't been a straightforward task.

He was often injured but found his footing as part of Dumbledore's Army.

However, Draco Malfoy was the Elder Wand's master, as he had disarmed Dumbledore before Severus Snape killed him.

However, the item's dual purpose for returning a person to their loved ones makes it seem like this had been Dumbledore's intention all along.

In Dumbledore's case, nothing could be done to bring him back to them, but he gave Ron a gift in not allowing the same to happen to him.

In reality, the Elder Wand belonged to Draco, as he was the one to disarm Dumbledore in the Astronomy Tower.