Costume Guide
Full plate armor, Barbuta helmet, medieval flail, and the absolute certainty of a Kingsguard knight who has decided exactly whose side he is on.
Ser Criston Cole is the Kingsguard knight at the centre of the civil war in House of the Dragon, HBO’s prequel series to Game of Thrones. Born of common blood in Dorne, he won his place in the Kingsguard through tournament success before becoming one of the most consequential and morally complex knights in Targaryen history. His Criston Cole armor look is defined by white or steel Kingsguard plate, a distinctive Barbuta-style helmet, and the cold efficiency of a man who converted personal loyalty into political conviction. More background on the character is available on the House of the Dragon characters Wikipedia page.
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Start with the medieval knight arms armor set, fitting the torso plate first and then working outward to the arm guards. Secure all straps firmly before adding additional pieces. Attach the medieval leg armor to both thighs and calves, then add the leg guard for supplementary coverage. Put on the Barbuta helmet last, adjusting the internal padding so it sits level. Take the flail in the dominant hand, chain coiled over the wrist at rest.
Criston Cole’s in-character register at a Halloween event is controlled, upright, and watchful. He does not move unnecessarily. He does not engage in idle conversation. When someone speaks to him, he turns to face them fully and answers in measured, complete sentences. The flail should remain at his side at all times except for group photos, where raising it to shoulder height is the most effective single gesture for the ser criston cole armor look.
Wearing Full Armor: Comfort and Mobility
A full medieval armor costume build requires planning for physical comfort across a long Halloween event. Before the event, try on all five pieces together and walk around for at least ten minutes to identify any straps that dig in or pieces that shift out of alignment. Adjust all straps until the armor sits evenly without pressure points. The Barbuta helmet adds significant weight to the neck and shoulders. Take it off during seated periods and replace it before standing for photos. Keep a dark base layer such as a black or dark grey long-sleeve top and trousers under the armor to cover any visible skin gaps between pieces throughout the evening.
White or Steel: Choosing Your Criston Cole Era
Ser Criston Cole’s armor appearance shifts across the seasons of House of the Dragon. In the earlier seasons he wears the clean white plate of the active Kingsguard. In later seasons his armor is darker, more worn, and more militaristic as his role shifts from ceremonial knight to active battle commander. For Halloween, the choice between white costume armor and natural steel-grey armor changes which era of the character you are referencing. Either works as a recognisable criston cole costume, but white reads more immediately as Kingsguard to anyone casually familiar with the show, while steel reads more accurately to the battle-hardened later seasons.
The Greens
The Green faction at the heart of House of the Dragon’s civil war in three Halloween costumes. Ser Criston’s full Kingsguard armor alongside Alicent’s distinctive green gown and Otto Hightower’s Hand of the King formal court look creates a group that represents one complete side of the Dance of the Dragons. All three characters are defined by their shared conviction that Aegon II should sit the Iron Throne, and their visual contrast between armored knight, political power, and court formality makes this one of the most thematically coherent House of the Dragon group Halloween ideas.
Kingsguard Knights
Three of House of the Dragon’s most physically imposing and most combat-defined characters in one Halloween group. Criston Cole’s white Kingsguard armor, Daemon Targaryen’s Targaryen sigil armor and silver-blond wig, and Ser Harwin Strong’s keep-guard look create a group of three medieval knights with distinct visual identities and a shared battlefield presence. The tension between Criston and Daemon from the tournament scenes makes this group particularly resonant for fans of the series.
House of the Dragon Court
The central court triangle from the early seasons of House of the Dragon in three Halloween costumes. Criston Cole as the Kingsguard sworn to protect the princess, King Viserys in his increasingly elaborate court regalia, and Rhaenyra in her Targaryen gowns create a group that covers the personal and political relationships at the heart of the first half of the series. The three characters together represent the Targaryen dynasty at the height of its fragile stability before the civil war begins.
Medieval Knights of Westeros
Three of the most recognisable knights and sworn swords from across the Game of Thrones universe in one Halloween group. Criston Cole’s Kingsguard white plate, Jaime Lannister’s gold Lannister armor and long blonde hair, and Jon Snow’s black Night’s Watch furs and Longclaw sword create a group that spans two generations and three different oaths of service. A broad Halloween group with immediate recognition across both Game of Thrones and House of the Dragon audiences.
The Ser Criston Cole costume is a full armor build with no wardrobe substitutions for the main pieces. All five items are dedicated purchases. The most cost-effective approach is to treat the medieval knight arms armor set as the primary investment, as it covers the largest area of the body and establishes the overall silhouette. The leg armor and leg guard are secondary additions that complete the lower body coverage. The Barbuta helmet and flail are the two most character-specific purchases. A dark base layer of black or dark grey clothing worn under the armor is the only wardrobe item needed and is likely already owned.
The most effective single upgrade to the basic ser criston cole armor build is painting or applying a Kingsguard sigil to the breastplate. The Kingsguard symbol, a white sword on a plain field, can be applied using white acrylic paint on a darker breastplate or a printed adhesive decal on lighter armor. This small addition transforms a generic medieval knight armor costume into a recognisable Kingsguard look for anyone familiar with House of the Dragon or Game of Thrones. For events where the Kingsguard affiliation is not the primary recognition detail, the full armor with Barbuta helmet and flail is distinctive enough to communicate ser criston cole costume without the sigil.
For Halloween 2026, the Ser Criston Cole Halloween costume is five pieces: a medieval knight arms armor set, a Barbuta helmet, medieval leg armor, a medieval flail, and a medieval leg guard. The armor set and Barbuta helmet are the two essential purchases. Wear a dark base layer underneath. The full build can be assembled for under $120 and communicates the Kingsguard knight aesthetic immediately to any House of the Dragon fan.
Criston Cole’s most memorable moments in House of the Dragon are defined by action rather than words: his controlled destruction of Ser Joffrey Lonmouth at the wedding feast, his cold investiture declarations, and his tournament confrontations. For Halloween in-character delivery, speak in measured complete sentences, face people fully when addressed, and let long pauses do the work. Criston Cole does not need to raise his voice. He is the most dangerous person in any room and he knows it.
Ser Criston Cole wears the white plate armor of the Kingsguard throughout House of the Dragon, including full torso plate, arm guards, leg armor, and a Barbuta-style helmet. His armor becomes more worn and militaristic in later seasons as his role shifts from ceremonial knight to battle commander during the Dance of the Dragons. The Barbuta helmet and full plate coverage are the two details that most clearly identify the criston cole armor costume.
Ser Criston Cole is a Kingsguard knight in House of the Dragon, HBO’s prequel series to Game of Thrones. Born of common stock in Dorne, he earned his place through tournament success before becoming Lord Commander of the Kingsguard and one of the key military figures in the Targaryen civil war. He serves as a central figure in the Greens faction supporting Queen Alicent Hightower and her son Aegon II.
The Ser Criston Cole costume is a medieval knight armor build, which makes it more involved than a clothing-based costume but still accessible with the right pieces. The medieval knight arms armor set does most of the heavy lifting as a single purchase. Adding the Barbuta helmet, leg armor, leg guard, and flail completes the full ser criston cole armor look. A complete build runs under $120 and requires no sewing or fabrication.
The criston cole helmet is a Barbuta-style full-head medieval helmet with a T-shaped or Y-shaped visor opening. It is the most character-specific purchase in the entire build and the item that most clearly communicates the Kingsguard aesthetic of the costume. The Barbuta is the closest widely available match for the helmet design visible in House of the Dragon’s Kingsguard sequences.
Ser Criston Cole is most associated with the flail in his tournament and combat appearances in House of the Dragon. The medieval flail in this guide is the in-character weapon prop that most clearly references his fighting style. It is a more distinctive choice than a generic sword for the criston cole costume and the detail that draws the most immediate recognition from any fan of the series who has watched the tournament sequences.
Every Game of Thrones, House of the Dragon, and A Knight of the Seven Kingdoms costume guide on CostumeRealm, listed alphabetically.
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Cersei Lannister
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Corlys Velaryon
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Ser Criston Cole
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Daemon Targaryen
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Daenerys Targaryen
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Drogo
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Egg
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Ellaria Sand
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George R. R. Martin
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Jaime Lannister
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Jon Snow
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King Viserys Targaryen
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Lyanna Stark
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Margaery Tyrell
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Melisandre
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Missandei
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Myrcella Baratheon
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Mysaria
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Night King
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Oberyn Martell
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Otto Hightower
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Rhaenyra Targaryen
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Shae
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Tyrion Lannister
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