Sure, Harry's the hero and Hermione is the brains... but surely Ron is the heart of Harry Potter? He's a stand-up guy that always manages to crack a smile, brave amidst adversity and a true Gryffindor.
The same could be said for Rupert Grint, the young lad with no previous acting experience who gamely took on one of the most high-pressure roles in movie history and made it his own.
Check out the low-down on Rupert Grint and his wonderful and unexpected life since the Harry Potter phenomenon took hold...
Rupert Grint, the world's most famous redhead
Unexpectedly skyrocketing to fame after his successful audition as Ron Weasley, Rupert Grint excelled at the role despite the daunting prospect of living up to millions of Potter fans' expectations. Good on you, Rupert!
Bonus fact: Just like Ron, Rupert has many siblings, being older brother to James, Georgina, Samantha and Charlotte.
Moving towards more mature projects
Like Harry Potter co-star Daniel Radcliffe, Rupert has edged towards the edgy in his post-Potter choices. He worked on anti-war film Into the White in 2012, before 2013 saw him tackle CBGB, the movie interpretation of the legendary New York club that launched bands as iconic as Blondie and The Ramones. Rock on, Rupert!
Bonus Fact: He has also taken on challenging theater work, performing in Jez Butterworth's Mojo at London's Harold Pinter Theatre in 2013.
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Rupert is a kind soul, having donated many personal items to raise charity funds, as well as taking part in events for the Royal National Lifeboat Institution, London's Keech Hospice Care and Cancer Research UK.
Bonus Fact: When Rupert Grint landed his Harry Potter cash, he decided to fulfil a long-held childhood dream - he bought an ice cream van!
2014: Rupert fights to get his gritty movie released
Rupert Grint filmed gritty sex, drugs and rock'n'roll drama Cherrybomb years ago, but despite pleasing audiences at the Berlin film festival in 2009, the movie has only just secured a distributor. An online campaign from fans, with Rupert himself right behind them, finally garnered more attention for this tough coming-of-age drama.
Bonus Fact: Cherrybomb was filming at the same time as Kristen Stewart's rock biopic about The Runaways, which was not able to claim its intended title Cherrybomb as Rupert's movie nabbed it first.
Was Rupert Grint good casting for Ron Weasley?