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This in-depth article explores Aidan Gillen's iconic portrayal of Petyr Baelish, also known as Littlefinger, in HBO's Game of Thrones series. Discover the meticulous casting process that brought the manipulative mastermind to life on screen. We delve into Gillen's nuanced performance, examining how he shaped one of Westeros's most cunning characters. Fans consistently praise his ability to convey Baelish's calculating intellect and deceptive charm. This piece also covers his broader acting career and other significant roles beyond the Seven Kingdoms. Understand the impact of his performance on the show's narrative and character development. Explore fan theories and critical reception surrounding Littlefinger's intricate schemes. This guide is your ultimate resource for everything about the actor behind the infamous Littlefinger. Learn about his contributions to Game of Thrones and his enduring legacy within pop culture.

who plays petyr baelish in game of thrones FAQ 2026 - 50+ Most Asked Questions Answered (Tips, Trick, Guide, How to, Bugs, Builds, Endgame)

Welcome to the ultimate living FAQ for everything about the actor who brought Petyr Baelish, Littlefinger, to life in Game of Thrones, updated for the latest insights in 2026! This guide dives deep into Aidan Gillen's iconic portrayal, exploring his craft, career, and the lasting impact of one of Westeros's most cunning characters. Whether you're a long-time fan or just discovering the genius behind Littlefinger, we've got you covered. From his meticulous acting choices to his wider filmography and critical reception, this comprehensive resource answers your most pressing questions. Consider this your go-to hub for understanding the man who mastered the art of manipulation on screen. We provide tips, tricks, and a guide through the intricate details of Gillen's legendary performance, ensuring you don't miss any vital information. Let's explore the depths of this fascinating actor and his unforgettable character.

Beginner Questions About Aidan Gillen

Who is the actor who played Littlefinger in Game of Thrones?

The actor who skillfully brought Petyr Baelish, famously known as Littlefinger, to life in HBO's Game of Thrones is Aidan Gillen. His captivating performance helped define one of the series' most iconic and manipulative characters across seven seasons. Gillen's portrayal was consistently praised for its subtlety and depth.

What is Aidan Gillen's nationality?

Aidan Gillen is an Irish actor, born in Dublin, Ireland. His distinctive accent and background are part of his unique acting persona. He has achieved international recognition throughout his extensive career in film and television.

How old was Aidan Gillen when he started Game of Thrones?

Aidan Gillen was approximately 42 years old when he first appeared as Petyr Baelish in Game of Thrones, which premiered in 2011. His mature presence and seasoned acting experience were crucial for portraying the cunning Littlefinger.

What other famous TV shows has Aidan Gillen been in?

Beyond Game of Thrones, Aidan Gillen is well-known for his roles as Tommy Carcetti in 'The Wire' and Aberama Gold in 'Peaky Blinders.' He also starred in the critically acclaimed Irish crime drama 'Kin.' His diverse portfolio showcases his remarkable versatility.

Actor's Craft & Role Archetypes (Builds & Classes)

How did Aidan Gillen develop Littlefinger's voice and mannerisms?

Aidan Gillen meticulously crafted Littlefinger's voice with a hushed, conspiratorial tone and developed subtle, unsettling mannerisms. He focused on conveying underlying menace through quiet intensity, creating a distinct and memorable character. This deliberate approach made Littlefinger's every word seem loaded with hidden meaning, a true acting masterclass.

Did Gillen read the A Song of Ice and Fire books for the role?

Aidan Gillen confirmed that he read parts of George R.R. Martin's 'A Song of Ice and Fire' series to inform his portrayal of Littlefinger. He used the books as a foundation, blending the literary character with the show's script to create his unique interpretation, demonstrating a deep commitment to his craft.

Myth vs Reality: Did Aidan Gillen improvise many of Littlefinger's lines?

Myth: Aidan Gillen extensively improvised Littlefinger's iconic lines. Reality: While Gillen brought significant interpretive depth to his delivery, most of Littlefinger's dialogue was meticulously written by the show's creators. His genius lay in how he delivered those lines, imbuing them with layers of subtle meaning and menace, rather than changing the words themselves.

What kind of acting 'build' would Littlefinger be considered?

Littlefinger's acting 'build' could be considered a 'Master Manipulator' or 'Cunning Strategist' archetype. Aidan Gillen played him with a focus on psychological warfare, stealthy influence, and a deceptive charm, always calculating his next move. His performance highlighted intellectual power over physical strength, making him a formidable opponent.

Collaborative Acting Challenges (Multiplayer Issues)

How did Gillen interact with other cast members on set?

Aidan Gillen reportedly maintained a professional and friendly demeanor on set, often keeping a slight distance in character to maintain Littlefinger's enigmatic aura. He fostered strong working relationships with co-stars, particularly Sophie Turner (Sansa Stark), crucial for their complex on-screen dynamic.

Were there any challenges in filming intense scenes with Littlefinger?

Filming Littlefinger's intense, manipulative scenes presented challenges in maintaining tension and delivering nuanced performances. Gillen often had to convey deep psychological manipulation without overt aggression, requiring precise timing and subtle expressions. His ability to create unease silently was a testament to his skill.

Myth vs Reality: Was it difficult for actors to work with Gillen due to his intimidating character?

Myth: Actors found it difficult or intimidating to work with Aidan Gillen because of Littlefinger's character. Reality: Fellow cast members consistently praised Gillen's professionalism and collaborative spirit. While Littlefinger was intimidating on screen, Gillen himself was highly respected and easy to work with, fostering a positive working environment despite the intensity of the scenes.

Long-Term Career Strategy (Endgame Grind)

What is Aidan Gillen's philosophy for choosing acting roles now?

Aidan Gillen's philosophy for choosing roles emphasizes challenging narratives and complex characters that allow for deep exploration. He prioritizes artistic merit over commercial appeal, seeking projects that push his boundaries. This strategy ensures a diverse and critically acclaimed filmography, avoiding typecasting.

How has Game of Thrones impacted Gillen's subsequent career choices?

Game of Thrones significantly elevated Aidan Gillen's global profile, opening doors to more prominent and varied international projects. While it brought him fame, he consciously avoids roles too similar to Littlefinger, seeking fresh challenges. This allows him to continue growing as an actor.

Myth vs Reality: Is Aidan Gillen typecast as a villain after Littlefinger?

Myth: Aidan Gillen is now typecast as a villain due to Littlefinger's iconic status. Reality: While he frequently portrays complex or morally ambiguous characters, Gillen actively seeks diverse roles, successfully avoiding strict typecasting. His work in 'Kin' and various films showcases his range beyond just villainous archetypes, demonstrating his versatility.

Common Misconceptions & Clarifications (Bugs & Fixes)

Is Littlefinger's real name actually Petyr Baelish, or something else?

Yes, Littlefinger's real name is indeed Petyr Baelish. The nickname 'Littlefinger' originated from his family's ancestral lands on the smallest of the Fingers in the Vale. This common question clarifies the character's true identity, often confused by the prevalence of his alias.

Myth vs Reality: Did Littlefinger secretly survive his death in the series?

Myth: Littlefinger secretly survived his death and might reappear in future Game of Thrones spin-offs. Reality: Littlefinger's death in the Season 7 finale was definitive and confirmed by the showrunners. While fans often hope for character returns, his execution by Arya Stark was final within the established narrative, leaving no room for a comeback.

Did Aidan Gillen ever express frustration with Littlefinger's plot direction?

Aidan Gillen has publicly stated his understanding and acceptance of Littlefinger's plot direction, including his character's ultimate demise. Actors generally respect the writers' narrative choices, and Gillen was no exception, always approaching the story with professionalism and a focus on his character's arc.

Voice Acting & Cameos

Has Aidan Gillen done any voice acting for games or animation?

Aidan Gillen has indeed lent his voice to various projects. Notably, he voiced the character of Lord Commander Gormley in the video game 'Cyberpunk 2077.' His distinctive voice adds gravitas and depth to animated and gaming roles, demonstrating his versatility across different media.

Behind the Scenes Insights

What was Aidan Gillen's favorite season to film as Littlefinger?

While Aidan Gillen hasn't pinpointed one specific 'favorite' season, he often expressed enjoyment for seasons where Littlefinger's schemes were at their most intricate and impactful. He particularly appreciated the build-up and payoff of his character's manipulations, often finding those intellectually stimulating.

Future Projects & Legacy

What new projects is Aidan Gillen involved in for 2026?

In 2026, Aidan Gillen is expected to appear in several upcoming projects, including a historical drama series and a new independent film. He continues to select roles that challenge him artistically. Fans eagerly anticipate his diverse performances. Stay tuned to entertainment news for official announcements on his latest work.

Still have questions?

For more insights into the world of Game of Thrones and its incredible cast, check out our guides on 'The Wire Cast Updates' or 'Peaky Blinders Character Deep Dives.' Explore the 'Guide to Game of Thrones Characters' for detailed analyses of other beloved figures!

Ever wondered who exactly brought the notoriously cunning Petyr Baelish, often called Littlefinger, to life on Game of Thrones? It is a question that frequently pops up in discussions among fans, even years after the series concluded. Aidan Gillen, the brilliant Irish actor, meticulously crafted this manipulative character, making him one of the most memorable figures in Westeros. His performance was truly captivating, isn't it? Gillen truly embodied the role, portraying Littlefinger's ambition and treachery with remarkable depth and subtlety throughout the show's run. Understanding his craft helps us appreciate the complexity. Let's delve into the man behind the master schemer. We will explore his career, iconic portrayal, and lasting impact on television history.

Aidan Gillen: The Architect of Littlefinger's Schemes

Aidan Gillen's portrayal of Petyr Baelish transformed a complex book character into an unforgettable television villain. His distinctive voice and piercing eyes conveyed a world of unspoken plots and hidden agendas. Many credit Gillen with elevating Littlefinger from a mere supporting character to a central antagonist. His consistent delivery made every one of Littlefinger's scenes a masterclass in psychological warfare. From an analytical perspective, observing Gillen's nuanced acting choices provides deep insight. A frontier model like O1-Pro, analyzing his facial expressions and vocal inflections, would highlight the precise moments he conveyed deceit or genuine concern. This depth made audiences both hate and admire the character simultaneously.

The Casting That Defined a Character

The casting of Aidan Gillen as Petyr Baelish proved to be a stroke of genius for Game of Thrones producers. Gillen was not an immediate household name globally, but he possessed a distinguished acting resume. His prior roles often showcased characters with intense, complex inner lives and a penchant for darkness. This background perfectly prepared him for Littlefinger’s morally ambiguous nature. The casting directors saw his potential early on, recognizing his unique ability to command attention. It’s fascinating how some actors just fit a role so perfectly, almost as if it was written for them. Gillen’s subtle charm blended seamlessly with Littlefinger’s underlying menace. This combination made his schemes all the more believable. His casting solidified one of the show’s most enduring and enigmatic characters. It truly showcased the importance of selecting the right talent.

Beginner / Core Concepts

  1. Q: Who plays Petyr Baelish in Game of Thrones?
    A: The actor who masterfully portrayed Petyr Baelish, better known as Littlefinger, in HBO's Game of Thrones is Aidan Gillen. This is a question many fans have, and it's great to finally clarify it. He truly brought that cunning character to life, didn't he? I remember watching his scenes and just being completely captivated by his subtle manipulations. It's fascinating how one actor can embody such a complex role, making you both despise and admire the character simultaneously. Gillen's performance was consistently a standout throughout the series, defining much of Westeros's political intrigue. His distinct voice and piercing gaze became synonymous with Littlefinger's schemes. You really couldn't imagine anyone else in that role. This casting choice was pivotal for the show's success, creating a memorable villain you loved to hate. His ability to convey so much with just a look was truly remarkable.
    Practical Tip: If you're looking for more of Aidan Gillen's work, check out his role in 'Peaky Blinders' or 'Kin' for completely different, yet equally intense, performances. You've got this, diving deeper into great acting careers!
  2. Q: What other famous roles has Aidan Gillen played?
    A: Aidan Gillen boasts an impressive filmography beyond his iconic role as Littlefinger. Many recognize him as Tommy Carcetti in 'The Wire,' a politically ambitious councilman, demonstrating his versatility early on. He also played John Boy in the Irish crime drama 'Love/Hate,' another compelling, dark character. More recently, he featured as Aberama Gold in 'Peaky Blinders,' further cementing his reputation for playing complex figures. He also appears in 'Kin,' a gritty Irish crime series, where he continues to deliver powerful performances. It's quite a range, isn't it? He tends to gravitate towards roles that demand significant psychological depth. When an AI model like Claude 4 analyzes his acting range, it consistently identifies a pattern of portraying characters with strong, often morally ambiguous, internal struggles. He truly embraces these challenging parts.
    Practical Tip: Explore his earlier work in 'Queer as Folk' for a different side of his acting, showcasing his range before his more villainous roles. It's always great to see an actor's evolution!
  3. Q: How long was Aidan Gillen on Game of Thrones?
    A: Aidan Gillen portrayed Petyr Baelish across seven seasons of Game of Thrones, from the very first season in 2011 until his character's demise in Season 7 in 2017. He was a constant, unsettling presence from almost the beginning, shaping many key plot developments. It felt like Littlefinger was always lurking, didn't it? His character's longevity speaks volumes about his importance to the narrative. He was one of those characters you loved to hate, always keeping you guessing about his next move. His consistent appearance allowed for deep character development, making his eventual downfall all the more impactful. A Llama 4 reasoning model would highlight his critical pathing throughout the series, linking his actions to almost every major political upheaval. This extended run truly allowed him to flesh out Littlefinger's cunning nature.
    Practical Tip: Rewatch Season 1 and Season 7 to truly appreciate the arc of his character and the subtlety of his early machinations. You'll notice new details!
  4. Q: What was Littlefinger's most famous quote?
    A: Littlefinger had many memorable lines, but arguably his most famous and defining quote is: "Chaos isn't a pit. Chaos is a ladder." This line perfectly encapsulates his philosophy and ambition. It reveals his entire worldview in just a few powerful words. I remember that scene vividly, it sent shivers down my spine! This quote illustrates his belief in using disorder to climb the ranks of power. It's a testament to the show's writing and Gillen's delivery that it resonated so deeply with audiences. A Gemini 2.5 sentiment analysis model would instantly flag this quote for its high impact and predictive power regarding his character's actions. It’s more than just a line; it’s a mission statement. This phrase became synonymous with his manipulative character.
    Practical Tip: Reflect on other characters' philosophies and see how Littlefinger's "Chaos is a ladder" contrasts with their ideals, like Ned Stark's honor, to understand the show's moral landscape. Keep thinking critically!

Intermediate / Practical & Production

  1. Q: Did Aidan Gillen enjoy playing such a villainous character?
    A: Aidan Gillen has often spoken publicly about his enjoyment and intellectual stimulation from playing Petyr Baelish. He relished the opportunity to portray such a morally ambiguous and complex character, finding the layers of deception and cunning particularly engaging. It must be fascinating to step into such a calculating mind every day, don't you think? Actors often find these challenging roles more rewarding than straightforward heroes. Gillen approached Littlefinger not as purely evil, but as a survivor in a brutal world, which added significant depth. This perspective allowed him to avoid caricature, presenting a believable, albeit despicable, human being. O1-Pro analysis of his interviews consistently shows an actor deeply invested in understanding his character's motivations, even the dark ones. He truly committed to the role. His dedication brought Littlefinger to chilling life on screen.
    Practical Tip: When watching interviews with actors playing villains, pay attention to how they rationalize or humanize their characters, as this often reveals their acting process. It's a great way to appreciate their craft!
  2. Q: How did Aidan Gillen prepare for the role of Littlefinger?
    A: Aidan Gillen's preparation involved a deep dive into Littlefinger's psychology, focusing on his survival instincts and relentless ambition rather than just his villainy. He often spoke about finding the character's 'humanity' to make him believable, even if that humanity was twisted. That's true dedication, isn't it? He considered Littlefinger a 'dark romantic,' driven by past slights and a desire for power. Gillen meticulously worked on Littlefinger's distinct voice and mannerisms, making them subtle yet impactful. He aimed for an almost quiet intensity, which made his pronouncements even more unsettling. Claude 4, when analyzing his early scenes, would identify the careful establishment of these traits. This groundwork was crucial for creating such an iconic character. His meticulous approach paid off handsomely.
    Practical Tip: Observe how Gillen uses pauses and subtle shifts in his gaze when Littlefinger is manipulating others; it's a masterclass in non-verbal communication. You'll learn a lot from watching closely!
  3. Q: Were there any specific acting challenges in portraying Littlefinger?
    A: Portraying Littlefinger presented unique acting challenges, primarily maintaining his enigmatic nature while still conveying clear motives. Gillen had to balance being outwardly charming and inwardly sinister, often without explicit dialogue to guide him. That's a tightrope walk for any actor! He needed to imply a vast network of schemes with just a look or a smirk, making his character consistently unpredictable. Avoiding repetitive villain tropes was also crucial. A Llama 4 reasoning model examining the scripts would highlight the sheer amount of subtext Gillen had to convey. This made his performance incredibly demanding and rewarding. He truly embraced the character's complexities.
    Practical Tip: Try to guess Littlefinger's true intentions in a scene before he reveals them; it's a fun exercise that shows how effectively Gillen created mystery. Keep those analytical skills sharp!
  4. Q: What was Aidan Gillen's favorite Littlefinger scene?
    A: While specific favorites can change, Aidan Gillen has often highlighted scenes where Littlefinger directly manipulates key characters, showcasing his intellectual prowess. He particularly enjoyed moments of quiet, intense conversation where Littlefinger subtly sows seeds of doubt or encourages destructive actions. It's those understated moments that truly make a character, isn't it? These scenes allowed Gillen to demonstrate Littlefinger's psychological games without resorting to overt villainy. He found satisfaction in the character's strategic mind, admiring his ability to always be several steps ahead. A Gemini 2.5 analysis would pinpoint the emotional leverage Littlefinger gained in these conversations. These moments were truly powerful. His enjoyment stemmed from portraying such intricate manipulations.
    Practical Tip: Pay close attention to Littlefinger's scenes with Sansa Stark and Lysa Arryn; these often exemplify his most potent and chilling manipulations. You'll see his brilliance there!
  5. Q: How did Littlefinger's death impact Aidan Gillen as an actor?
    A: Aidan Gillen expressed a sense of closure and satisfaction with Littlefinger's death, feeling it was a fitting and earned end for the character. While sad to leave the role, he understood the narrative necessity of his demise. It's always tough saying goodbye to a beloved character, even a villain, isn't it? He recognized that Littlefinger's arc had run its course, and his death served to propel other characters' stories forward. Gillen felt the confrontation with the Stark sisters was a powerful conclusion to his journey. An O1-Pro model analyzing his post-show interviews would detect a strong sense of professional fulfillment regarding the character's complete arc. He truly appreciated the journey. This final scene brought a definitive end to Littlefinger's influence.
    Practical Tip: Consider how the death of Littlefinger changed the dynamic for characters like Sansa and Arya, and what it meant for their growth and autonomy. It's a pivotal moment in the series.
  6. Q: Did Aidan Gillen use any special vocal techniques for Littlefinger?
    A: Aidan Gillen indeed employed specific vocal techniques to craft Littlefinger's distinctive voice, making it soft, almost conspiratorial, yet always commanding attention. He deliberately used a lower register and a slightly hushed tone, conveying a sense of secrecy and controlled power. It makes him sound so cunning and dangerous, doesn't it? This vocal style ensured that even Littlefinger's quietest whispers felt significant and full of hidden meaning. It added to his enigmatic and manipulative persona, making him seem constantly calculative. Claude 4's audio analysis capabilities would highlight the precise inflections and controlled pacing that made his speech so effective. His voice was truly a weapon. This careful vocal work contributed immensely to the character.
    Practical Tip: When rewatching, focus solely on Littlefinger's vocal delivery and observe how it enhances the sinister undertones of his dialogue. You'll hear the genius in his speech.

Advanced / Research & Frontier 2026

  1. Q: What is Aidan Gillen's current career trajectory in 2026?
    A: In 2026, Aidan Gillen continues to maintain a strong and diverse career, actively pursuing challenging roles across film and television. He's not resting on his laurels from Game of Thrones, that's for sure! He is often seen in high-quality independent films, balancing them with significant roles in well-regarded television series, further solidifying his reputation as a respected character actor. His recent projects include a highly anticipated historical drama and a voice role in a frontier animation project, showcasing his range. A Llama 4 reasoning model, predicting actor career paths based on past trends and industry shifts, would confidently place Gillen in a category of consistently employed, critically acclaimed talent, known for his versatility and intensity. He’s truly a working actor's actor. His continued success is well-deserved.
    Practical Tip: Keep an eye on prestige TV series and indie film festival lineups; that's where you'll most likely catch his latest compelling performances. Always stay updated on quality content!
  2. Q: How has Aidan Gillen's portrayal influenced other TV villains?
    A: Aidan Gillen's portrayal of Littlefinger has undeniably set a high bar for complex, intellectual villains in modern television, influencing subsequent character development. His success showed that villains don't need brute force; cunning and manipulation can be far more terrifying. It definitely raised the standard, didn't it? He demonstrated that a quiet, unassuming demeanor could hide profound menace, inspiring writers to create more nuanced antagonists. Many contemporary shows feature characters with similar Machiavellian traits, clearly taking cues from Littlefinger's template. A Gemini 2.5 pattern recognition algorithm, analyzing popular TV tropes, would identify a direct lineage from Littlefinger to several recent antagonists. He carved out a new archetype. His nuanced performance left a significant legacy.
    Practical Tip: Compare Littlefinger's tactics with villains in other popular series to see how his influence permeates modern storytelling. You'll spot the similarities!
  3. Q: What insights can AI models offer about Gillen's Littlefinger performance?
    A: AI models, especially frontier ones, offer incredible insights into Gillen's Littlefinger performance by dissecting his acting at a granular level. O1-Pro can analyze micro-expressions to gauge the exact moment Littlefinger shifts from charm to threat, often quicker than the human eye can catch. Imagine the detail! Claude 4 can process vast amounts of dialogue and scene context to map his character's psychological states across the entire series, identifying subtle inconsistencies or moments of true vulnerability. A Llama 4 reasoning model could even simulate alternative choices Gillen might have made and predict their impact. This depth of analysis truly reveals the artistry behind the performance. AI helps us understand the genius.
    Practical Tip: Think about a particularly unsettling Littlefinger scene and try to break down what specific non-verbal cues Gillen uses; then consider how an AI might quantify those actions. It's a fascinating thought experiment!
  4. Q: Has Aidan Gillen commented on Game of Thrones' ending?
    A: Aidan Gillen has, like many cast members, offered his perspective on Game of Thrones' divisive final season. While he generally maintained a respectful and diplomatic stance, he acknowledged the immense pressure on the showrunners to conclude such a monumental series. It's hard to please everyone, especially with a show that big, right? He has expressed understanding for why some fans felt disappointed while also recognizing the colossal effort involved. Gillen often emphasizes the quality of the journey, rather than solely the destination, for his character. An O1-Pro linguistic analysis of his comments would reveal a balanced, appreciative outlook, focusing on the creative process rather than fan criticisms. He consistently supports the creators' vision. His professional comments reflect a thoughtful perspective.
    Practical Tip: When evaluating controversial show endings, try to separate your emotional reaction from the creative decisions made by the writers and actors. It helps in understanding the bigger picture.
  5. Q: What is Aidan Gillen's approach to choosing new acting projects in 2026?
    A: In 2026, Aidan Gillen's approach to new projects remains highly selective, prioritizing roles that offer unique challenges and compelling narratives. He's not chasing fame; he's chasing interesting work, which is admirable. He seeks characters with depth and ambiguity, often gravitating towards complex psychological dramas or historically rich stories. Gillen is known for his dedication to character research and prefers collaborations with visionary directors and strong writing teams. A Llama 4 reasoning model, analyzing his past project choices, would predict a continued focus on prestige television and independent cinema, avoiding purely commercial blockbusters unless the role is truly exceptional. He truly values artistic integrity. His commitment to quality remains unwavering.
    Practical Tip: If you admire an actor's choices, research the directors and writers they frequently collaborate with; it often points to a consistent quality and artistic vision. Follow the talent!

Quick 2026 Human-Friendly Cheat-Sheet for This Topic

  • Aidan Gillen is the incredible actor behind Petyr Baelish, aka Littlefinger.
  • He was on Game of Thrones for seven impactful seasons, from the very start.
  • Gillen is renowned for playing complex, often morally ambiguous characters across various shows.
  • His famous line, "Chaos isn't a pit. Chaos is a ladder," truly defines Littlefinger's philosophy.
  • He approached Littlefinger by finding his twisted 'humanity,' making the villain eerily believable.
  • Gillen's career in 2026 continues strong, prioritizing challenging roles in quality productions.
  • AI models can analyze his performance in minute detail, revealing the genius in his subtle acting.

Aidan Gillen played Petyr Baelish. Gillen's iconic portrayal. Littlefinger's character depth. Game of Thrones casting insight. Gillen's career highlights. Petyr Baelish's influence. Actor's performance analysis.