Imelda Staunton played that bitchy bureaucrat/teacher in the Harry Potter movies. Other than THAT, I know absolutely nothing about these three loons.
I’m not a child or a parent, I never watched the Harry Potter movies. I saw the original Willy Wonka when it came out but it’d be hard to call any of those actors a celebrity strictly from one franchise.
Gene Wilder had a long career in a variety of roles and was famous (more so in death as a meme). I can’t recall him speaking on any political matters.