Gellert Grindelwald is the main antagonist of the Fantastic Beasts and Where to Find Them franchise. He is formerly the friend of Albus Dumbledore.
Background
Personality
Gellert Grindelwald was obssessed, evil, and cruel. As shown at his Paris rally, Grindelwald inspired fanatical loyalty in attendees by praising Wizardkind for being "rare souls", but seemingly not being a pure-blood supremacist, as Grindelwald showed a level acceptance of Muggles(such as Jacob Kowalski, the No-Maj boyfriend of his new Acolyte Queenie Goldstein), and only labelled tyrannical Muggles as the true enemy, claiming that what he and his For the Greater Good revolution were actually opposing was the future Second World War that the Muggles would start, and that it was the Aurors, rather than his Acolyteswho were the truly violent wizards. Indeed, Grindelwald even persuaded the peaceful, kind, and compassionate Queenie Goldstein to join his cause by promising to abolish such laws as Rappaport's Law, thus promising to bring Queenie and others a newfound freedom to love whomever they please. Grindelwald also showed a great trust in his followers, as seen by his trusting Vinda Rosier and his other Acolytes to "spread the word" of his ideology across the Wizarding World. Grindelwald was extremely persuasive even in his time in prison, where he kept convincing his jailers to join his side, forcing the MACUSA to change his guards three times, and to cut out Grindelwald's tongue.