David Bradley
We love to hate Argus Filch, David Bradley’s character, but we’re glad his cat Mrs. Norris didn’t become a permanent statue. As for the actor himself, he has barely stopped acting since the Harry Potter films left theaters. For instance, he’s appeared in the horror series The Strain and the blockbuster Captain America: The First Avenger. He was also on Game of Thrones as Walder Frey. Bradley has done some voice acting, so you might have heard his vocal abilities without even realizing it.
Imelda Staunton
Few villains inspire the same amount of hate as Dolores Umbridge, the one-time teacher of defense against the dark arts. It seems her actress loathes her, as well. Entertainment Weekly, “I think [Dolores is] a monster and [should] be played as such,” Imelda Staunton said to Entertainment Weekly in 2016. Well, she’s not mincing words. Staunton will probably find it light relief to play the Queen in the fifth season of The Crown.