As Harry, Ron, and Hermione race against time and evil to destroy the Horcruxes, they uncover the existence of the three most powerful objects in the wizarding world: the Deathly Hallows.
When Arthur Weasley (Mark Williams) is exiting the lift (elevator), he can be heard addressing the "Red-Haired Witch" (Rose Keegan) as "Wakinda".
(at around 54 mins) When taking an elevator in the Ministry of Magic while disguised as the employees of the ministry, none of the trio expects the elevator to start moving horizontally, but Ron's father works in the Ministry of Magic and Harry has already travelled with the similar elevator in the ministry in Harry Potter and the Order of the Phoenix. So, at least Ron and Harry should have known how the elevators move in the building.
Based on Harry Potter and the Deathly Hallows
by J. K. Rowling
Daniel Radcliffe as Harry Potter: A 17-year-old wizard.
Rupert Grint as Ron Weasley: A young wizard and one of Harry's best friends and ally.
Emma Watson as Hermione Granger: A young witch and one of Harry's closest friends and ally.
Bonnie Wright as Ginny Weasley: Ron's younger sister and Harry's love interest.
Helena Bonham Carter as Bellatrix Lestrange: A Death Eater, Sirius Black's insane cousin and murderer, and the aunt of Draco.
Robbie Coltrane as Rubeus Hagrid: Harry's half-giant friend, and gamekeeper at Hogwarts.
Warwick Davis as Griphook: A goblin and former employee at Gringotts Bank. Davis replaced Verne Troyer, who portrayed the character physically in the first film, though Davis had dubbed Griphook's lines.
Tom Felton as Draco Malfoy: a Death Eater and son of Lucius and Narcissa Malfoy.
Ralph Fiennes as Lord Voldemort: An evil power-hungry wizard, and the leader of the Death Eaters.
Michael Gambon as Professor Albus Dumbledore: Former headmaster of Hogwarts killed by Severus Snape in the previous film.
Brendan Gleeson as Alastor 'Mad-Eye' Moody: A member of the Order of the Phoenix.
John Hurt as Garrick Ollivander: A wandmaker abducted by the Death Eaters.
Rhys Ifans as Xenophilius Lovegood: The eccentric father of the trio's friend Luna.
Jason Isaacs as Lucius Malfoy: Draco Malfoy's father and a disgraced Death Eater.
Helen McCrory as Narcissa Malfoy: Draco's mother and Bellatrix's sister.
Bill Nighy as Rufus Scrimgeour: The new Minister for Magic.
Alan Rickman as Professor Severus Snape: A double agent to the Death Eaters and the new headmaster of Hogwarts.
Jim Broadbent as Professor Horace Slughorn: The new Potions teacher at Hogwarts, who has secret knowledge regarding Lord Voldemort.
Timothy Spall as Peter Pettigrew/Wormtail: The Death Eater who betrayed Harry's parents to Voldemort.
Imelda Staunton as Dolores Umbridge: Senior Undersecretary to the Minister for Magic and Head of the Muggle-born Registration Commission.
David Thewlis as Remus Lupin: A member of the Order of the Phoenix and a former teacher at Hogwarts.
Natalia Tena as Nymphadora Tonks: Remus Lupin's wife and a member of the Order of the Phoenix.
George Harris as Kingsley Shacklebolt: Another member of the Order of the Phoenix.
Julie Walters as Molly Weasley: The Weasley matriarch and a mother figure to Harry.
Mark Williams as Arthur Weasley: Ron Weasley's father, an Auror at the Ministry of Magic.
Domhnall Gleeson as Bill Weasley: Arthur and Molly's eldest son who helps Harry to escape from Little Whinging and who is to marry Fleur.
Clémence Poésy as Fleur Delacour: A French Witch of the Beauxbatons School who also helps Harry to escape from Little Whinging.
Guy Henry as Pius Thicknesse: The puppet Minister of Magic installed by Voldemort.
Peter Mullan as Corban Yaxley: A Death Eater at the Ministry of Magic.
Carolyn Pickles as Charity Burbage: The Muggle Studies teacher at Hogwarts, tortured and killed by Voldemort
David Ryall as Elphias Doge: An old schoolfriend of Albus Dumbledore who defends him in an obituary.
Richard Griffiths as Vernon Dursley: Harry's Muggle uncle.
Fiona Shaw as Petunia Dursley: Harry's Muggle aunt.