The beloved Harry Potter film series, which is based on the children's books of the same name by J.K. Rowling, is one of the most critically and commercially successful franchises in cinema history. Collectively, the films - beginning with Harry Potter and the Sorcerer's Stone in 2001 and ending with Harry Potter and the Deathly Hallows: Part 2 in 2011 - have grossed more than $7.723 billion at the worldwide box office, with Deathly Hallows: Part 2 even taking the top spot for being the highest-rated film of 2011 according to Rotten Tomatoes.
The movies, of course, primarily focused on Hogwarts students Harry Potter, Ron Weasley, and Hermione Granger, played by Daniel Radcliffe, Rupert Grint, and Emma Watson, respectively. While the story revolved around Harry and his friends, several other actors and actresses filled out the movies' supporting roles. There were a number of small roles that people may remember and some they may not, but those roles, no matter how minor and seemingly inconsequential, attracted some of the biggest names in the industry (as well as some newcomers). With so many movies and so many people on-screen, it can be tough to remember them all.
Here are 15 Stars Even Die-Hard Fans Forgot Were In Harry Potter.
15 Frank Dillane
Frank Dillane is most recognized for his role as Nick Clark on AMC's Fear the Walking Dead, as well as recently appearing as Henry Coffin in Ron Howard's In the Heart of the Sea. But before he got his big break, the actor's first major role was playing a 16-year-old version of Tom Riddle in Harry Potter and the Half-Blood Prince in 2009.
Dillane appeared as Tom Riddle in only two scenes in the film, though both scenes were different variations of the same sequence - a dream in which Professor Horace Slughorn (Jim Broadbent) revealed the true nature of Horcruxes to the young Tom... for academic purposes, of course. But because Slughorn was ashamed of his actions, he altered the memory; hence the reason for two scenes (and two memories).
14 Freddie Stroma
Time After Time and UnREAL actor Freddie Stroma was once one of Gryffindor's top candidates for Quidditch keeper before he became H.G. Wells and started hunting down his friend (who ended up being Jack the Ripper) through time. Stroma played the student Cormac McLaggen, who was one year ahead of Harry and his friends.
Stroma first appeared as McLaggen in Harry Potter and the Half-Blood Prince. McLaggen certainly fancied Hermione throughout the film but she, obviously, didn't feel the same way. That was, unfortunately, the primary extent of his character's purpose in the movie. Of course, he briefly reappeared in Harry Potter and the Deathly Hallows: Part 1 and Part 2, trying to tell-off a Death Eater. Stroma can next be seen in Peter Segal's 2018 rom-com, Second Act.
13 Domhnall Gleeson
Domhnall Gleeson briefly played Bill Weasley, Ron's oldest brother, in Harry Potter and the Deathly Hallows: Part 1 and Part 2. What's interesting is that both Domhnall and his father, Brendan Gleeson (Mad-Eye Moody), appeared in Harry Potter, but the only scene they share is when they're in Harry's home at the beginning of Deathly Hallows: Part 1. Moreover, it's Bill who informs everyone else that Mad-Eye is dead.
Admittedly, many die-hard fans may actually recognize Gleeson as one of the Weasley brothers, even though he only briefly appeared in two installments, but casual moviegoers and those who haven't seen the final Harry Potter films in years may be shocked to realize that the Star Wars' General Hux was actually one of the good guys in the war against Voldemort and his loyal Death Eaters.
12 Derek & Julianne Hough
Derek and Julianne Hough are known for various film roles as well as being record-breaking dancers on the series Dancing With The Stars. But before their climb to fame, they both briefly appeared as Hogwarts students in Harry Potter and the Sorcerer's Stone. Julianne Hough can be seen in the stands watching the Quidditch match as well as in the Great Hall, while Derek Hough, who plays an unnamed Ravenclaw student, is seen walking past Hermione at one point.
The Hough siblings happen to be among the only non-British stars to appear in the movie, which was made possible because they don't have speaking roles. As some fans may recall, J.K. Rowling requested as a precondition that all actors in the films be British when she sold the rights to the original four books.
11 Michelle Fairley
Michelle Fairley is perhaps most widely known by general audiences for playing Catelyn Stark on Game of Thrones and Margot Al-Harazi on 24: Live Another Day, but before she became the matriarch of the Stark family, she was Hermione Granger's mother, a muggle dentist just like Hermione's father.
Fairley can only be seen at the very beginning of Harry Potter and the Deathly Hallows: Part 1, after calling her daughter down for tea, when Hermione uses a memory charm to erase her parents' memory of her, presumably to protect them from harm and to prevent them from looking for her when she embarks on her journey to find the Horcruxes with Harry and Ron. Unfortunately, Fairley's character's name is never revealed; she's just known as Mrs. Granger.
10 Rhys Ifans
Anonymous and The Amazing Spider-Man actor Rhys Ifans played an integral role in Harry Potter and the Deathly Hallows: Part 1 as Xenophilius Lovegood, the editor of The Quibbler. Aside from being Luna Lovegood's father, he's the one who first explained what the Deathly Hallows are to Harry, Ron, and Hermione, after Harry first saw Xenophilius wearing a Deathly Hallows pendant at Bill Weasley's wedding. Unfortunately, the Death Eaters took Luna and he was forced to betray Harry and his friends in order to get his daughter back (at least in his mind).
Many Harry Potter fans will remember Harry interacting with Mr. Lovegood, but most people may not realize that the same actor is the one who played Mycroft Holmes on CBS' Elementary and Zanik Hightopp in Alice Through the Looking Glass.
9 Jamie Campbell Bower
The Mortal Instruments and The Twilight Saga star Jamie Campbell Bower made a brief appearance in Harry Potter and the Deathly Hallows: Part 1 as a young Gellert Grindelwald. Since he appears only in a vision and his face is most visible in a picture shown at a later point, many fans may not realize who the actor was. In fact, Grindelwald appears twice in the film: once played by Bower (in the past) and another time played by Michael Byrne (in the present).
Bower's version of Grindelwald appears long before the events of Fantastic Beasts and Where to Find Them, in which the character Grindelwald plays a vital role. Johnny Depp made his surprise debut as Grindelwald in Fantastic Beasts and is slated to reprise his role in 2018's Fantastic Beasts: The Crimes of Grindelwald.
8 Verne Troyer
Verne Troyer is best known for playing Mini-Me in the Austin Powers series, but between Austin Powers installments, Troyer made a brief appearance as Griphook, a goblin who works for Gringotts Wizarding Bank in Diagon Alley, in Harry Potter and the Sorcerer's Stone. In fact, it's Griphook who shows Harry to his vault the first time Harry visited Gringotts.
Troyer appeared on-screen as Griphook, but it was Warwick Davis, who's known for playing several roles in the Star Wars franchise, who provided the voice for the character. In the end, Davis took the plunge and played Giphook - on-screen in addition to providing the voice - in Harry Potter and the Deathly Hallows: Part 1 and Part 2. Interestingly, Davis also played Professor Filius Flitwick in the first two Potter films.
7 Scarlett Byrne
Falling Skies and The Vampire Diaries actress Scarlett Byrne may be known for her television roles, but her first major role on film was playing Pansy Parkinson, a Slytherin student of Hogwarts in Harry Potter and the Half-Blood Prince, and again in Harry Potter and the Deathly Hallows: Part 1 and Part 2. However, her role in Part 1 can be considered a cameo.
What's interesting about her character is that, while Byrne played Parkinson in the final three Harry Potter films, the student has always been a part of the series. Pansy Parkinson was played by Katherine Nicholson in Sorcerer's Stone and Chamber of Secrets, by Genevieve Gaunt in Prisoner of Azkaban, by Charlotte Ritchie in Goblet of Fire, and by Lauren Shotton in Order of the Phoenix.
6 John Cleese
A great number of British actors and actresses appeared in the Harry Potter films over the years, but there were many characters - played by even more actors and actresses - in Hogwarts that weren't students or professors, such as the ghost, Nearly Headless Nick. Legendary actor and Monty Python co-founder John Cleese played the lovable ghost in Harry Potter and the Sorcerer's Stone and Chamber of Secrets.
While Nearly Headless Nick shows up in some of the other books - particularly to comfort Harry after the death of Sirius Black in Order of the Phoenix and then again in Deathly Hallows - he didn't appear again on-screen after Chamber of Secrets. In the end, Cleese's character just disappeared, but then again, isn't that what ghosts are supposed to do anyway?
5 Kelly Macdonald
As previously mentioned, there are more than a fair share of ghosts and various other characters in Hogwarts that aren't students and professors. While John Cleese played Nearly Headless Nick, Kelly Macdonald played The Grey Lady in Harry Potter and the Deathly Hallows: Part 2.
It's revealed in that film that The Grey Lady, aka the ghost of Ravenclaw House, is actually the ghost of Rowena Ravenclaw's daughter, Helena Ravenclaw, who somewhat aides Harry in finding her mother's lost diadem, one of Voldemort's Horcruxes.
Macdonald's version of the character may be the most memorable and most notable, but Australian actress Nina Young actually played The Grey Lady first, in Harry Potter and the Sorcerer's Stone. It's unclear why Young didn't reprise her role for the series' final film, but a scheduling conflict with 2010's Clash of the Titans might've had something to do with it.
4 Ciarán Hinds
Ciarán Hinds is yet another Game of Thrones actor who first appeared in Harry Potter before making his way to Westeros. Hinds played Albus Dumbledore's brother, Aberforth, in Harry Potter and the Deathly Hallows: Part 2. British actor Jim McManus previously played Aberforth Dumbledore in Harry Potter and the Order of the Phoenix, but Hinds replaced the actor for the series' final chapter.
While Harry Potter fans will undoubtedly remember Aberforth appearing in the final film, aiding Harry and his friends in hiding from the Death Eaters and sneaking them into Hogwarts, many people may not realize that, under all that hair, was Hinds, an actor who is now known for his role as Mance Rayder in Game of Thrones as well as Steppenwolf in Justice League.
3 Julie Christie
English actress Julie Christie has quite an extensive filmography that dates back to the swinging London era, yet she didn't miss out on the opportunity to have a small role in Harry Potter and the Prisoner of Azkaban. She played Madam Rosmerta - the landlady and bartender of Hogsmeade's Three Broomsticks - in the third Potter film.
Christie appears briefly in a scene with Cornelius Fudge and Professor McGonagall inside the Three Broomsticks, in which they informally discuss the Dementors' presence at Hogwarts as well as Sirius Black's high-profile escape from Azkaban prison. Little did they know, though, that Harry was in the room while they were talking, hidden underneath the Cloak of Invisibility of course, and he heard McGonagall mention the pivotal detail that Sirius is Harry's godfather.
2 Julian Glover
We're cheating on this one a bit because legendary actor Julian Glover never actually appeared on-screen in the Harry Potter series. Rather, his voice was used for one of the franchise's many creatures. Glover provided his voice for the spider Aragog, one of Hagrid's closest friends, in Harry Potter and the Chamber of Secrets.
In the Forbidden Forest, Aragog revealed his past and Hagrid's innocence in a young girl's death years before to Harry and Ron, while also giving them a small clue as to the location of the Chamber of Secrets, all before letting loose his army of spiders on them.
Glover has played so many characters over the years that alter the way he looks so people tend to forget that he actually appeared in some of the biggest franchises out there, including James Bond, Star Wars, and Indiana Jones.
1 John Hurt
"The wand chooses the wizard." It's a quote many Harry Potter fans will remember, and they'll also remember that it was Garrick Ollivander, the owner of Ollivanders wand shop in Diagon Alley, who said that line to Harry when he first came to get his wand. But many people may not realize that the actor who played Ollivander is famed British actor John Hurt, who's also appeared in films such as Midnight Express, The Elephant Man, and Indiana Jones.
What's interesting is that Hurt first appeared as Ollivander in Harry Potter and the Sorcerer's Stone in 2001 and only reappeared in Harry Potter and the Deathly Hallows: Part 1 in 2010, and then again in Part 2 in 2011 - the first and last films in the entire series, almost 10 years apart.
What other Harry Potter stars did we forget? Let us know in the comments!