Cast of Harry Potter 5: Order of the Phoenix Actors Guide

Anyone who’s watched Harry Potter and the Order of the Phoenix remembers the moment Dolores Umbridge glides into Hogwarts, toad-like smile fixed, quill poised — a turning point for the series, introducing new faces and pushing the trio into darker territory. Here’s who brought those characters to life and what made the cast of Harry Potter 5 so memorable.

Film title: Harry Potter and the Order of the Phoenix (2007) ·
Number of main cast members: 3 (Daniel Radcliffe, Emma Watson, Rupert Grint) ·
Notable new character actress: Imelda Staunton as Dolores Umbridge ·
Returning villain actor: Ralph Fiennes as Lord Voldemort

Five key facts about the film at a glance:

Who plays Dolores Umbridge in Harry Potter 5?

Imelda Staunton as Dolores Umbridge

Imelda Staunton brought to life the pink-cardigan-wearing, cruelty-hiding bureaucrat that fans love to hate. According to TV Guide, Staunton is officially credited as Dolores Umbridge. The character becomes the new Defense Against the Dark Arts teacher and, later, Hogwarts High Inquisitor.

Warner Bros. describes the plot as Harry, Hermione, and Ron urging Harry to act against Umbridge’s increasingly oppressive rule. Staunton’s performance earned widespread praise for making Umbridge both deeply unsettling and uncomfortably real.

Umbridge’s role in the Ministry of Magic

Umbridge is sent to Hogwarts by the Ministry to interfere with Dumbledore’s leadership. She embodies the intersection of bureaucracy and malice — a role Staunton played with chilling precision. The TV Guide listing confirms that Staunton joined the cast as a new addition for this film.

The implication: Staunton’s Umbridge became one of the most memorable antagonists in the entire series, proving that a villain doesn’t need a wand to terrify.

What is the full cast of Harry Potter 5?

Main trio

• Daniel Radcliffe as Harry Potter
• Emma Watson as Hermione Granger
• Rupert Grint as Ron Weasley

Three teens, one prophecy, and a rising Dark Lord — the core trio carried the emotional weight of the fifth film.

Supporting cast

• Michael Gambon as Albus Dumbledore
• Gary Oldman as Sirius Black
• Alan Rickman as Severus Snape
• Maggie Smith as Minerva McGonagall
• Robbie Coltrane as Rubeus Hagrid
• Brendan Gleeson as Mad-Eye Moody
• Jason Isaacs as Lucius Malfoy
• Ralph Fiennes as Lord Voldemort

New additions

• Imelda Staunton as Dolores Umbridge
• Helena Bonham Carter as Bellatrix Lestrange
• Natalia Tena as Nymphadora Tonks
• Kathryn Hunter as Mrs. Arabella Figg

The pattern: This film balanced beloved veterans with fresh blood, setting the stage for the darker conflicts to come.

The debut of Bellatrix Lestrange set the stage for the final two films.

Who plays Hagrid in Harry Potter 5?

Robbie Coltrane as Rubeus Hagrid

Robbie Coltrane reprised his role as the half-giant Keeper of Keys and Grounds at Hogwarts. The Rotten Tomatoes page lists Coltrane in the cast for Order of the Phoenix. Hagrid is absent for much of the film — he returns at the end after being sent on a secret mission — but his emotional scene with Harry in the Hogwarts castle remains a highlight.

The catch: Because Hagrid spends most of the film off-stage, Coltrane had limited screen time, yet his character’s absence itself became a narrative driver.

Who plays Dudley Dursley in Harry Potter 5?

Harry Melling as Dudley Dursley

Harry Melling returned as Harry’s muggle cousin, Dudley. The TV Guide confirms Melling’s credit. In this film, Dudley and Harry share a rare moment of tension when Dementors attack in Little Whinging — a scene that reveals cracks in Dudley’s bully exterior.

The trade-off: Melling’s Dudley gets a sliver of character development before fading out of the later films.

Dudley’s role in the Dursley family

Dudley is the spoiled son of Vernon and Petunia Dursley, Harry’s muggle relatives. Richard Griffiths played Vernon, and Fiona Shaw played Petunia — both returning from previous films. The IMDb page includes all three in the cast.

Who are the main cast members of Harry Potter 5?

Daniel Radcliffe

Radcliffe returned for his fifth outing as the Boy Who Lived. According to Warner Bros., Radcliffe heads the cast. In Order of the Phoenix, Harry’s anger and isolation take center stage after the traumatic events of the Triwizard Tournament.

Emma Watson

Watson continued as Hermione Granger, the voice of reason and founder of Dumbledore’s Army. She is credited in the film.

Rupert Grint

Grint played Ron Weasley, Harry’s loyal best friend. He provides both comic relief and steadfast support as the trio navigates Umbridge’s regime and the Order’s secrets.

Helena Bonham Carter

Bonham Carter made her franchise debut as Bellatrix Lestrange, Voldemort’s most fanatical follower. Her performance set the standard for the character’s later appearances.

Ralph Fiennes

Fiennes returned as Lord Voldemort, the Dark Lord whose return the Ministry refuses to acknowledge. The film culminates in a spectacular duel in the Ministry atrium.

Michael Gambon

Gambon played Albus Dumbledore. Dumbledore is sidelined early and returns for the climactic battle with Voldemort.

Imelda Staunton

Staunton’s debut as Umbridge stole the show. Her character’s reign of terror at Hogwarts is the emotional core of the film.

That chemistry is why even quiet scenes carry weight.

The cast of Harry Potter 5 balanced a beloved trio with a wave of new talent, most notably Imelda Staunton’s Umbridge and Helena Bonham Carter’s Bellatrix. For returning viewers, the film marks the moment the series shifted from schoolyard adventures to wartime stakes. For anyone curious about the faces behind the magic, the full cast list confirms what fans already knew: this was an ensemble firing on all cylinders. For Warner Bros., the casting bet paid off: Order of the Phoenix grossed $942 million worldwide, setting the stage for the franchise’s final act.

For a deeper look at the film’s darker tone and expanded cast, check out our detailed breakdown of the Order of the Phoenix cast and plot.

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