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Things You Didn't Know About The 'Harry Potter' Cast

Updated February 9, 2021 12.9k votes 1.8k voters 180.4k views24 items

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The Harry Potter movies started the careers of some impressive young actors, many of whom have continued to blow audiences away with their performances long after the last film wrapped. Of course, they weren't the only ones involved, as the films involved some of the world's greatest veteran actors, including Richard Harris, Maggie Smith, Warwick Davis, John Hurt, Bill Nighy, Alan Rickman, Helena Bonham Carter, Ralph Fiennes, and many more.

Each of these fantastic actors has their own story to tell, and because so many people have been in Harry Potter films, it's safe to say there are many things you didn't know about the Harry Potter cast.

  • 1

    Daniel Radcliffe Got To Watch 'Fawlty Towers' Upon Being Cast

    Photo: Harry Potter and the Sorcerer's Stone / Warner Bros. Pictures

    When Daniel Radcliffe learned he was cast to star as Harry in Harry Potter and the Sorcerer's Stone, he was taking a bath. His parents then allowed him to stay up an additional half-hour to celebrate.

    Plus, he got to watch the British sitcom Fawlty Towers, which starred John Cleese, who would go on to share the screen with Radcliffe as Nearly Headless Nick in the Harry Potter films.

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  • 2

    Jason Isaacs Tried To Take Something From The Set

    Photo: Harry Potter and the Chamber of Secrets / Warner Bros. Pictures

    Jason Isaacs played the villainous Lucius Malfoy in the films. Of course, the actor isn't a bad guy, but Isaacs channeled his character a bit when he tried to take something from the set, which was apparently going on all the time, according to the actor:

    I complained after [film] four or five that I didn't have my own wand. I invented and designed my cane that had a wand in it. I'd try to steal it at the end of the film, and they'd catch me.

    He also failed to take a few copies of a newspaper from the set, which he brought to his trailer. "I was probably thinking of giving it back - I was just showing off for my friend," Isaacs said. "And within about three seconds, there was a contingency banging at my door of my trailer, 'Can we have those newspapers back?' and appropriately humiliated me in front of my friend."

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  • 3

    Daniel Radcliffe's Venture Into Puberty Required Some Voice-Over Work

    Photo: Harry Potter and the Sorcerer's Stone / Warner Bros. Pictures

    When filming began for the first Harry Potter film, some of the younger actors were on the verge of entering puberty. A few weeks before filming wrapped on Harry Potter and the Sorcerer's Stone, Daniel Radcliffe's voice began to break. Instead of adding some comment about it, or even addressing it at all, the studio brought in a "soundalike" child actor.

    A young actor named Joe Sowerbutts was brought in because his voice was similar to Radcliffe's. The actor spoke about his casting to the Sun: "I couldn't believe it when they told me I was going to be in the film. I was really surprised that Daniel's voice broke because he's younger than me. But you could say it was a lucky break for me."

    Sowerbutts provided his voice to dub over Radcliffe's for the broomstick escapade scene when the children were learning to fly, and again for a scene in the forest.

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  • 4

    Miriam Margolyes Was The First Actor To Drop The F-Word On British TV

    Photo: Harry Potter and the Goblet of Fire / Warner Bros. Pictures

    The people of the UK have been less prudish than Americans when it comes to uttering various words on television. George Carlin had his "Seven Dirty Words" bit in 1972 about the words you couldn't say on television, but a decade before, Miriam Margolyes, who played Professor Sprout, said one of them on British TV. 

    She was the first actor to do so, and she said the F-word. The utterance came in her 20s when she was representing Newnham College in the first series of University Challenge. She claims to have said the word out of frustration while working on the show.

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