Daniel Radcliffe as Harry Potter:
* Wide Search: Thousands of children auditioned for the role of Harry Potter. Chris Columbus, the director of the first two films, wanted someone who could portray Harry's bravery, kindness, and vulnerability.
* Radcliffe's Early Talent: Radcliffe had already gained experience in acting, starring in the BBC miniseries "David Copperfield" at age 10.
* The "Right" Harry: Columbus and the casting team felt that Radcliffe embodied Harry's spirit and had the acting talent to carry the weight of the role.
Emma Watson as Hermione Granger:
* School Audition: Watson, who had no prior acting experience, was discovered at her school in Oxfordshire. She was chosen from hundreds of girls who auditioned.
* Hermione's Intelligence and Determination: Watson's performance during her audition showcased her intelligence, determination, and charm, which aligned perfectly with Hermione's character.
* Perfect Match: The casting team felt that Watson's personality and acting ability were a natural fit for the role.
Rupert Grint as Ron Weasley:
* Letter to J.K. Rowling: Grint, a huge fan of the Harry Potter books, wrote a letter to J.K. Rowling expressing his desire to play Ron Weasley.
* Impressed by Grint's Enthusiasm: Rowling was impressed by Grint's dedication and thought he was a perfect fit for the role.
* Authentic Weasley Personality: Grint's natural awkwardness and humor resonated with Ron's character, and he nailed the audition.
Ultimately, the casting team chose Radcliffe, Watson, and Grint because they believed they possessed the qualities needed to bring the beloved characters to life on screen. Their success in the films proved them right!