HBO's 'Harry Potter' Series Casts Rafe Spall as Arthur Weasley Alongside Moaning Myrtle and Colin Creevey

The Wizarding World expansion at HBO has made another major casting splash as production accelerates in the United Kingdom. Acclaimed British actor Rafe Spall (Trying, The Big Short, Life of Pi) has officially signed on to play the eccentric, Muggle-obsessed patriarch Arthur Weasley in the high-profile television adaptation of Harry Potter. Alongside Spall's headline casting, newcomer Molly Hewitt-Richards has been tapped as the tragic Hogwarts ghost Moaning Myrtle, while rising young talent Jasper Ambrose (The Sheep Detectives) will portray Gryffindor shutterbug Colin Creevey.

The casting announcements come as the production team shoots at Warner Bros. Studios Leavesden, laying extensive groundwork for both the debut season and its already-greenlit sophomore installment. Helmed by showrunner Francesca Gardiner and executive producer/director Mark Mylod—both celebrated for their Emmy-winning work on HBO’s critically acclaimed titan Succession—the decade-long television endeavor promises an unprecedented, faithful page-by-page reimagining of J.K. Rowling’s iconic seven-book saga.

Stepping Into the Shoes of Beloved Wizarding Legends

For millennial fans who grew up waiting in midnight lines for book releases and watching the Warner Bros. film franchise unfold across the 2000s, Arthur Weasley remains one of the warmest and most endearing figures in modern fantasy. The character was originally immortalized on the silver screen by veteran character actor Mark Williams, whose comical fascination with rubber ducks and electrical plugs defined the patriarch of The Burrow. Spall, known for balancing poignant vulnerability with razor-sharp comedic timing across British and international productions, brings seasoned dramatic gravitas to the Department of Misuse of Muggle Artefacts employee.

Meanwhile, taking over the role of Moaning Myrtle—originally delivered with unforgettable operatic melodrama by Shirley Henderson—Hewitt-Richards steps into the haunted girls' bathroom on Hogwarts' second floor. Ambrose's Colin Creevey will also serve as a pivotal figure when the adaptation tackles the dark mysteries of the Chamber of Secrets, joining a cast that features young newcomer Alistair Stout as Ron Weasley and BAFTA winner Paapa Essiedu in the complex role of Severus Snape.

HBO's High-Stakes Gamble on Streaming Nostalgia

As Warner Bros. Discovery continues positioning Max as a premier prestige streaming destination, the televised reboot represents the studio’s most ambitious franchise initiative since Peter Jackson’s Middle-earth epics. Unlike the two-hour theatrical features which had to omit sprawling subplots like S.P.E.W. and detailed Hogwarts classroom dynamics, Gardiner's multi-season episodic format affords the creative team breathing room to explore wizarding society with authentic depth.

With stellar talent behind the camera and seasoned theatrical stars anchoring the adult ensemble, HBO’s Harry Potter continues to assemble one of the most scrutinized casts in modern television history. As camera reels roll across Leavesden's soundstages, millennial audiences around the world will be watching closely to see how this beloved universe comes alive for a brand-new generation.