HBO's 'Harry Potter' series has gained three new cast members for its second season. It has been revealed who will portray Arthur Weasley — Ron's father and one of Harry Potter's most loyal adult allies — on screen, as well as the ghost Moaning Myrtle and the Muggle-born Gryffindor Colin Creevey. These additions complement the already-announced cast of the second part of the adaptation, which continues to draw the attention of franchise fans.

Rhys Spall to Play Arthur Weasley

The role of Arthur Weasley, a wizard from an ancient pure-blood family who works at the Ministry of Magic and raises seven children together with his wife Molly, has gone to British actor Rhys Spall. In the film franchise, this role was previously played by Mark Williams. Notably, Spall will be the second member of his family in the 'Harry Potter' universe: his father, Timothy Spall, played Peter Pettigrew in the films. Rhys Spall himself is widely known for the series 'Under the Salt Marsh' and 'Making a Family'.

Moaning Myrtle Gets a New Look

The role of the ghost Moaning Myrtle, who resides in the girls' bathroom on the second floor of Hogwarts, has been taken by actress Hewitt-Richards, known for the series 'Code of Silence' and 'Casualty'. The character first appears in the story 'Harry Potter and the Chamber of Secrets'; in the film franchise, Myrtle was played by Shirley Henderson. Thus, the iconic image of the ghost will receive a new interpretation in the series adaptation.

Colin Creevey Returns to the Screen

The third new role for the second season is Colin Creevey — a Muggle-born Gryffindor student, obsessed with the figure of Harry Potter and constantly wandering around Hogwarts with a camera in an attempt to photograph his idol. In the books, the character first appears in 'Chamber of Secrets', and in the 2002 film he was played by Hugh Mitchell, after which Colin did not appear in the film franchise again. In the HBO series, the role has been passed to a new performer, whose name is not revealed in the provided materials.

Full Cast of the Second Season

The new actors complement the already-announced cast of the second season: Cot Gerington will play Gilderoy Lockhart, Bonnie Gill — Ginny Weasley, Lenny Rush — Dobby, and Billy Barratt — Tom Riddle. The lead roles in the series are played by Dominic McLaughlin (Harry Potter), Arabella Stanton (Hermione Granger) and Alastair Stout (Ron Weasley). The cast also features John Lithgow (Albus Dumbledore), Janet McTeer (Minerva McGonagall), Paapa Essiedu (Severus Snape), Lox Pratt (Draco Malfoy) and Nick Frost (Rubeus Hagrid).

Filming and Premiere Date

Filming of the second season is taking place at the Warner Bros. studio in Leavesden, UK. HBO previously released a trailer for the premiere of the 'Harry Potter' series, which, according to the announced schedule, will take place on December 25, 2026. Thus, by the time of release, viewers are promised an expanded cast of characters, including Arthur Weasley, Moaning Myrtle and Colin Creevey, familiar from the books and films.