Fantastic Beasts: The Secrets of Dumbledore
Pemeran

Eddie Redmayne as Newt Scamander:
A British Ministry of Magic employee in the Beasts Division of the Department for the Regulation and Control of Magical Creatures, as well as a self-proclaimed magizoologist. He played a part in remedying the events of a violent attack in New York City in December 1926 involving dark wizard Gellert Grindelwald. He is a confidant of Albus Dumbledore, despite being an outcast from certain circles of the British Wizarding Community due to his checkered past.
Katherine Waterston as Tina Goldstein: A promoted Magical Congress of the United States of America (MACUSA in short) Auror and Newt's eventual wife.
Dan Fogler as Jacob Kowalski: A No-Maj veteran of World War I, owner of a bakery, friend of Newt, and former lover of Queenie.
Alison Sudol as Queenie Goldstein: The pretty and vivacious younger sister of Tina, who worked alongside her in the Federal Wand Permit Bureau after Tina was once demoted. She is a powerful natural Legilimens. After being convinced that Grindelwald will make her dream of marrying Jacob come true, she joins his side, eventually abandoning her lover and sister.
Ezra Miller as Credence Barebone:
The disturbed adopted child of Mary-Lou Barebone, severely abused and downtrodden. Enraged by people's treatment of him, during the incident of 1926 he set his Obscurus parasite loose in New York City, causing widespread destruction. He survived in a tiny Obscurus fragment and was sought out by Grindelwald. He initially believed he was Corvus Lestrange, Leta Lestrange's deceased half-brother. At the end of the second film, however, Grindelwald alleged that his real name is Aurelius Dumbledore and that his brother, Albus, would seek to kill him.
Callum Turner as Theseus Scamander:
Newt Scamander's older brother who is a dedicated and loyal employee in the British Ministry of Magic. He is famous for the title "war hero" for his excellent show of bravery and generosity in the First World War. He constantly tries to tame Newt into more elegance so that he is better accepted in society. He lost his fiancée Leta Lestrange in September 1927, after she sacrificed herself in Grindelwald's rally in Pere Lachaise, Paris to save the Scamander brothers.
William Nadylam as Yusuf Kama: A French Wizard of Senegalese descent and ally of Newt, who previously attempted to kill Credence while believing him to be his half-brother Corvus.
Poppy Corby-Tuech as Vinda Rosier: Grindelwald's loyal right-hand follower.
Jessica Williams as Professor Eulalie "Lally" Hicks: A professor of Ilvermorny School of Witchcraft and Wizardry.
Jude Law as Albus Dumbledore:
An extremely influential and powerful wizard in the British Wizarding Community, known in the British Ministry of Magic and throughout the wider wizarding world for his academic brilliance, and a professor of Defence Against the Dark Arts at Hogwarts School of Witchcraft and Wizardry. He holds a blood pact with Grindelwald, with whom he had a close relationship with as a teenager, preventing them from duelling each other.
Mads Mikkelsen as Gellert Grindelwald:
An infamous powerful dark wizard who caused mass violence, terror and chaos around the globe, seeking to lead a new Wizarding World Order based on his strong belief in wizarding superiority. He had a close relationship with Dumbledore as a teenager. Mikkelsen replaces Johnny Depp, who portrayed the character in the previous films. On replacing Depp, Mikkelsen noted that it would be a "creative suicide" to copy Depp's or Colin Farrell's portrayals as Grindelwald, having developed his own take on the character, and admitted that a "bridge" should be needed between Depp's performance and his own, having been a fan of Depp since his early films.
Victoria Yeates as Bunty: Newt Scamander's assistant.
Richard Coyle
Oliver Masucci as Head of the International Confederation of Wizards.