One of the most important themes in the Harry Potter franchise was the importance of friendship and how having a strong support structure makes any individual as strong as the most powerful witch or wizard. Harry, Ron and Hermione's friendship served as a prime example of this, as Harry likely would've died in his quest to stop Voldemort without them. Nevertheless, the trio wasn't the only group of friends in the Wizarding World that represented the franchise's core theme, as even Newt Scamander's close friends were just as valuable in his quest to stop Grindelwald.
Source：https://www.cbr.com/vincent-crabbe-death-harry-potter/
