If wizards were asked to name the most evil wizard in history.
It would not be Herpo the Foul, who created the basilisk.
Nor would it be Ekrizdis, who might have created the evil beings known as Dementors.
And it certainly would not be Voldemort, who led the Death Eaters in wreaking havoc.
They would all speak the same name.
Gellert Grindelwald.
A Durmstrang dropout who had once inflicted indelible wounds on the wizarding world.
He had even destroyed several Ministries of Magic, exposed multiple wizarding communities, and wiped some of them out.
He was a madman, a fanatical member of the Pure-Blood Party.
During the Muggles' World War II, he rose among the wizards, drawing a great many fanatics into his ranks with his ideology of wizard supremacy.
Back then, he and the great Dumbledore fought a magical duel known as the War of the Century.
He ultimately lost and was imprisoned in Nurmengard.
But the wizards of that time did not yet know.
Just how far Grindelwald, a Seer, had seen.
There was a saying that put it well.
You could not defeat someone who could see the future.
During the era when the Pure-Blood Party ran rampant, Grindelwald took part in the birth of another evil organization.
Hydra.
A wizard who could see the future joined forces with an ambitious military officer.
Together, they created Hydra, an organization that had still not been eradicated to this day.
Their ideology would continue to live on within it.
Even decades later, after leaving Nurmengard once more, Grindelwald successfully provoked a war between wizards and Muggles through the Hydra he had left behind.
He brought wizards fully into the public eye and triggered the famous Battle of Magic Crystal Island, spurring the unification of wizarding society.
One could say that