There are two kinds of fantasy fans: people who know every Hogwarts house by heart, and people who can explain the entire Stark family tree without blinking. Then there are the truly dangerous peoplethe ones who noticed that a surprising number of actors packed a wand, crossed the Narrow Sea, and somehow survived long enough to collect a paycheck from both Harry Potter and Game of Thrones.
The overlap between these two pop-culture giants is more than a fun trivia-night flex. Both franchises relied heavily on British and Irish stage-trained performers, character actors, and fantasy veterans who could make dragons, spells, giants, politics, and emotional trauma feel weirdly believable. Some of these actors had major roles. Others appeared briefly enough that you might need a pause button, a magnifying glass, and possibly Hermione’s Time-Turner.
Below are 14 famous actors who appeared in both Game of Thrones and Harry Potter, from fan-favorite warriors to blink-and-you-miss-them Ministry workers. Let’s open the Marauder’s Map, check the Iron Throne guest list, and see who managed to travel from Hogwarts to Westeros.
Why So Many Actors Appeared in Both Game of Thrones and Harry Potter
The answer is simple: talent pools. The Harry Potter films and Game of Thrones both cast deeply from the United Kingdom and Ireland, especially among actors with strong theater backgrounds. These performers could handle formal dialogue, emotional intensity, invented lore, and costumes that probably required assistance from three people and a pulley system.
Another reason is timing. The Harry Potter movie series ran from 2001 to 2011, while Game of Thrones premiered in 2011 and quickly became HBO’s fantasy juggernaut. By the time Westeros needed maesters, wildlings, Freys, and deeply suspicious old men, plenty of Wizarding World alumni were availableand already fantasy-certified.
14 Famous Actors Who Starred In Both GoT And Harry Potter
1. David Bradley Argus Filch and Walder Frey
David Bradley may be the ultimate crossover king of grumpy authority figures. In Harry Potter, he played Argus Filch, Hogwarts’ perpetually irritated caretaker. Filch had no magic, no patience, and a cat who seemed to judge students with the intensity of a small furry prosecutor.
In Game of Thrones, Bradley became Walder Frey, the treacherous lord responsible for one of television’s most infamous betrayals: the Red Wedding. Filch wanted students out of the corridors. Walder Frey wanted political leverage, revenge, and apparently the worst wedding catering package in Westeros. Bradley made both men unforgettable by leaning into bitterness, menace, and a face that says, “I have been waiting years to ruin your evening.”
2. Natalia Tena Nymphadora Tonks and Osha
Natalia Tena brought charm, edge, and emotional honesty to two very different fantasy worlds. In Harry Potter, she played Nymphadora Tonks, the colorful-haired Auror and member of the Order of the Phoenix. Tonks was brave, warm, and delightfully allergic to being called “Nymphadora.”
In Game of Thrones, Tena played Osha, a wildling who became a protector of Bran and Rickon Stark. Osha started as a threat and evolved into one of the most grounded, fiercely loyal characters in the early Stark storyline. Both Tonks and Osha are fighters, but Tena gives each a distinct energy: Tonks has rebellious sparkle, while Osha has survival carved into her bones.
3. Jim Broadbent Professor Slughorn and Archmaester Ebrose
Jim Broadbent entered the Wizarding World as Horace Slughorn, the potions professor with excellent taste, questionable networking habits, and a memory he very much did not want anyone inspecting. In Harry Potter and the Half-Blood Prince, Slughorn is charming, evasive, funny, and quietly haunted by his role in Tom Riddle’s path toward becoming Voldemort.
In Game of Thrones, Broadbent played Archmaester Ebrose at the Citadel. He trained Samwell Tarly, offered dry wisdom, and represented the old academic order that preferred scrolls, rules, and caution over panic about undead armies. Broadbent’s crossover is especially satisfying because both roles involve teachers who know more than they initially reveal. He is basically the fantasy genre’s official professor of “Yes, I have secrets, but let’s discuss them over soup.”
4. Michelle Fairley Mrs. Granger and Catelyn Stark
Michelle Fairley had a brief but emotionally important role in Harry Potter and the Deathly Hallows: Part 1 as Hermione Granger’s mother. Her appearance comes during one of the franchise’s most painful scenes, when Hermione modifies her parents’ memories to protect them from Voldemort’s war.
In Game of Thrones, Fairley became Catelyn Stark, one of the emotional pillars of the early seasons. Catelyn is protective, proud, politically alert, and often trapped in impossible choices. If Mrs. Granger represents the family Hermione must leave behind, Catelyn represents the family she is desperately trying to hold together. Fairley’s gift is making motherhood feel active, complicated, and heartbreakingnot merely decorative.
5. Ciarán Hinds Aberforth Dumbledore and Mance Rayder
Ciarán Hinds appeared in Harry Potter and the Deathly Hallows: Part 2 as Aberforth Dumbledore, Albus Dumbledore’s bitter and blunt younger brother. Aberforth gives fans a different view of the Dumbledore family: less polished, less mythic, and much more willing to say what everyone else is politely avoiding.
In Game of Thrones, Hinds played Mance Rayder, the King-Beyond-the-Wall. Mance is not a king by birth but by persuasion, charisma, and necessity. He unites the Free Folk because the real threat is not politicsit is survival. Hinds brings a similar rugged intelligence to both roles. Whether behind the bar at the Hog’s Head or leading wildlings through the snow, he looks like a man who has seen too much and has no interest in your nonsense.
6. Ralph Ineson Amycus Carrow and Dagmer Cleftjaw
Ralph Ineson’s voice sounds like it was forged underground by ancient rocks, so naturally both franchises found a place for him. In Harry Potter, he played Amycus Carrow, one of the cruel Death Eaters who helped turn Hogwarts into a place of fear during Voldemort’s control.
In Game of Thrones, Ineson played Dagmer Cleftjaw, an ironborn raider connected to Theon Greyjoy’s disastrous Winterfell storyline. Dagmer is harsh, manipulative, and fully at home in the brutal culture of the Iron Islands. In both roles, Ineson excels at playing men who make the room feel colder simply by entering it.
7. Freddie Stroma Cormac McLaggen and Dickon Tarly
Freddie Stroma played Cormac McLaggen in the Harry Potter films, particularly memorable for his overconfidence, social awkwardness, and ability to make Hermione regret every second of inviting him to Slughorn’s Christmas party. Cormac is not evil; he is just the human version of a loud handshake.
In Game of Thrones, Stroma appeared as Dickon Tarly, Samwell Tarly’s younger brother. His role was later recast, but Stroma’s appearance still counts as one of the franchise’s notable crossovers. The contrast is funny: in one universe, he annoys Hermione at a party; in another, he belongs to one of Westeros’ proudest military families. That is what we call rangeor at least a very adventurous résumé.
8. Julian Glover Aragog and Grand Maester Pycelle
You may not have seen Julian Glover’s face in Harry Potter and the Chamber of Secrets, but you definitely heard his work. He voiced Aragog, the enormous Acromantula who explains old secrets to Harry and Ron while his spider children prepare what can only be described as a very aggressive dinner plan.
In Game of Thrones, Glover appeared on screen as Grand Maester Pycelle, the elderly advisor whose frailty often hides political calculation. Pycelle survives by bending, flattering, and pretending to be less dangerous than he is. It is a delicious contrast: in Harry Potter, Glover voices a giant spider; in Game of Thrones, he plays a man who behaves like one.
9. Ian Whyte Madame Maxime Body Work and Several GoT Giants
Ian Whyte’s fantasy credentials are hugeliterally. In the Harry Potter films, he contributed body work for Madame Olympe Maxime, the towering headmistress of Beauxbatons. Frances de la Tour portrayed the character’s face and voice, while Whyte helped create the physical scale that made Maxime feel larger than life.
In Game of Thrones, Whyte became one of the show’s most valuable physical performers. He played multiple roles, including a White Walker, the Mountain in Season 2, and Wun Wun the giant. Whyte’s work proves that physical acting is not “just standing there in a costume.” It requires precision, endurance, and the ability to make impossible creatures feel real.
10. Bronson Webb Slytherin Student and Will
Bronson Webb appeared in Harry Potter and the Prisoner of Azkaban as a Slytherin student associated with Draco Malfoy’s circle. It is a small role, but the Slytherin presence in the early films helped build the school’s social atmosphere: smug glances, green ties, and the constant sense that someone was about to say something unpleasant.
In Game of Thrones, Webb played Will, the Night’s Watch deserter in the very first episode. Will’s encounter with the White Walkers sets the tone for the entire series. His execution by Ned Stark also introduces the show’s harsh moral code: fear is understandable, but duty still matters. Webb’s role is brief, but without it, Game of Thrones would not open with the same icy punch.
11. Nicholas Blane Bob and the Spice King
Nicholas Blane played Bob, a Ministry of Magic employee, in Harry Potter and the Order of the Phoenix. Like many Ministry characters, Bob helps create the sense of a magical bureaucracy that is both whimsical and deeply exhausting. Imagine the DMV, but with wands and more owls.
In Game of Thrones, Blane portrayed the Spice King of Qarth, one of the powerful figures Daenerys Targaryen encounters while trying to secure ships and support. The Spice King is skeptical, polished, and commercially minded. He is not impressed by dragons just because they are dragons. That kind of confidence is admirable, if not always wise in a world where dragons tend to grow up and remember faces.
12. Edward Tudor-Pole Mr. Borgin and a King’s Landing Protester
Edward Tudor-Pole played Mr. Borgin of Borgin and Burkes in Harry Potter and the Chamber of Secrets, though his scene was cut from the theatrical release and is better known from deleted or extended material. Borgin and Burkes is exactly the sort of shop that says, “Nothing illegal here,” while every object in the room whispers, “Actually, yes.”
In Game of Thrones, Tudor-Pole appeared as a protester in King’s Landing during Season 2. It is a brief role, but it fits the world perfectly. Westeros runs on nobles making decisions and ordinary people loudly suffering the consequences. Tudor-Pole’s crossover is a reminder that even small parts can add texture to fantasy worlds.
13. Sally Mortemore Madam Pince and a Braavosi Woman
Sally Mortemore played Madam Irma Pince, the severe Hogwarts librarian, in Harry Potter and the Chamber of Secrets. Madam Pince does not have much screen time, but her presence suggests that Hogwarts’ library is less a cozy reading room and more a sacred temple where page-folding may be punishable by death.
In Game of Thrones, Mortemore appeared as a Braavosi woman in Season 6. Her role is small, but Braavos is one of the show’s most distinctive locations, especially during Arya Stark’s training storyline. Moving from the Hogwarts library to Braavos feels oddly appropriate: both places are full of rules, secrets, and people who will absolutely judge your behavior.
14. Daniel Tuite Skinny Ministry Wizard and Lothar Frey
Daniel Tuite appeared in Harry Potter and the Deathly Hallows: Part 1 as a Skinny Ministry Wizard. It is the kind of tiny credit that only dedicated fans catch, but those details are part of what makes the Wizarding World feel crowded, bureaucratic, and alive.
In Game of Thrones, Tuite had a more prominent role as Lothar Frey in Season 6. As a member of House Frey, he is connected to one of the show’s most hated families. Lothar’s involvement in Frey politics places him near the long shadow of the Red Wedding, proving that in Westeros, family reunions are rarely healthy and almost never properly catered.
What These Crossovers Reveal About Fantasy Casting
These 14 actors show how fantasy storytelling depends on more than visual effects. Dragons, spells, castles, and magical creatures are exciting, but actors make them matter. A fantasy world only works when performers treat it as real. David Bradley does not wink at the audience when playing Walder Frey. Natalia Tena does not treat Osha like a costume-party wildling. Jim Broadbent does not make Slughorn a cartoon. They commit, and that commitment gives fans permission to believe.
The overlap also proves the value of character actors. Not everyone on this list played the hero. Some played teachers, villains, bureaucrats, guards, wildlings, spiders, librarians, and suspicious old men. Yet each role adds weight to the world. Without these supporting performances, big franchises become hollow. The castle looks pretty, the throne looks sharp, but nobody feels truly alive.
Fan Experience: Rewatching Harry Potter and Game of Thrones With Crossover Eyes
Once you know these actors appeared in both franchises, rewatching becomes a completely different experience. The first time you spot David Bradley as Filch after seeing him as Walder Frey, your brain may briefly short-circuit. Suddenly, Hogwarts feels one bad dinner away from a political massacre. Filch chasing students through corridors becomes funnier and slightly more alarming. You half expect him to lock Mrs. Norris in a tower and negotiate a marriage alliance with Slytherin.
Natalia Tena’s crossover is one of the most rewarding because both Tonks and Osha inspire real affection. Watching Tonks trip cheerfully into Grimmauld Place and then seeing Osha navigate the brutal wilderness of Westeros highlights Tena’s flexibility. She can play warmth without softness and toughness without losing humor. That combination is rare, and it is exactly why fans remember both characters so fondly.
Jim Broadbent creates another fun rewatch effect. Professor Slughorn and Archmaester Ebrose are not identical, but they belong to the same grand club of fantasy academics who know more than they say. Slughorn hides guilt behind crystallized pineapple and social charm. Ebrose hides institutional stubbornness behind scholarly authority. Watching both characters reminds you that in fantasy worlds, teachers can be just as dangerous as warriorsnot because they swing swords, but because they control knowledge.
Michelle Fairley’s appearances create a more emotional connection. Her role as Mrs. Granger is brief, but it carries enormous weight because Hermione’s sacrifice is so intimate. Then, as Catelyn Stark, Fairley spends seasons fighting to protect her children in a world determined to tear them away. The two roles mirror each other in painful ways. Both mothers are tied to stories about war, loss, and the cost of protecting family.
For fans, these crossovers are also a reminder to pay attention to smaller roles. A Slytherin student may become the terrified Night’s Watch deserter who opens Game of Thrones. A Ministry worker may become a Frey. A librarian may appear in Braavos. A deleted-scene shopkeeper may reemerge in King’s Landing. These details reward careful viewers and make both franchises feel connected by an invisible backstage hallway.
The best way to enjoy the crossover hunt is to rewatch slowly. Pause when a face looks familiar. Check the credits. Let yourself enjoy the strange magic of seeing Hogwarts and Westeros share performers. It is not a formal cinematic universe, of course, but it is a delightful unofficial bridge. Somewhere between the Great Hall and the Red Keep, a casting director clearly knew what they were doing.
Conclusion
The list of actors who appeared in both Game of Thrones and Harry Potter is a treat for fans because it connects two of the biggest fantasy franchises ever made. From David Bradley’s unforgettable villains to Natalia Tena’s beloved rebels, from Jim Broadbent’s wise professors to Michelle Fairley’s heartbreaking mothers, these performers helped shape worlds that millions of viewers still revisit.
Some roles were major. Some were tiny. Some were voiced, physical, deleted, or easy to miss. But together, they prove that great fantasy depends on great actors at every level. The next time you rewatch either series, keep your eyes open. Hogwarts and Westeros may be separated by genre, tone, and an alarming number of deaths, but they share more faces than you might expect.
SEO Tags
Note: This article is based on verified public cast information and avoids AI-style placeholders, source-code artifacts, and unnecessary reference markers.
