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This is the Character Sheet for the Korean drama, Moon Lovers: Scarlet Heart Ryeo.

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Main Characters

     Go Ha Jin/Hae Soo  
Portrayed by: Lee Jieun (IU)
Go Ha Jin is a 25 year old woman that drowned while saving a child and this somehow lead to her soul being transported to the body of 16 year old Hae Soo in 941, Goryeo.
  • Break the Cutie: Hit with this hard. She starts as an optimistic, energetic and happy-go-lucky girl but because of her close relationship with the princes, she ends up involved in the tumultuous fight for the throne and suffers the consequences more than once.
  • Broken Bird: By the end. She no longer hopes for a truly happy ending for herself and is afraid that her daughter could somehow end up trapped like she was.
  • Brooding Boy, Gentle Girl: Her relationship with Wang So.
  • The Cutie: Easily one of the most beloved characters.
  • Died in Your Arms Tonight: Passes away in Wang Jung's.
  • The First Cut Is the Deepest: While she was Ha Jin, she was cheated on by her boyfriend with one of her best friends, leading her to be quite adamant about trust in a relationship. When she was Hae Soo, she fell for the 8th prince, Wang Wook and was quick to trust him, kind of forgetting about her previous experience. However, whenever she truly needs his help and support, he lets her down time and again, making her insecurities flare up once more and end up affecting her growing relationship with Wang So negatively.
  • Fish out of Temporal Water: Ha Jin lived in 2016 and was transported somehow to 941, so some of her ideas as well as her personality contrasted sharply with what was considered appropriate.
  • The Hero Dies: Succumbs to her illness in the Grand Finale.
  • Ill Girl: It's implied that Hae Soo had a heart disease since young and while it wouldn't have been a problem, the harshness of the palace life, the torture she went through and the upsetting revelations she received throughout the years worsened her condition considerably
  • The Ingenue: At the beginning, she truly believed that she could have a happy existence with the people she loved and that their greed for the throne could disappear. It didn't
  • Last Request: That her daughter won't get trapped in the palace the same way she did
  • Like Brother and Sister: How she views her relationships with the 10th, 13th and 14th princes. Unfortunately, only the 13th prince saw her that way, the other two didn't.
  • Morality Pet: She's one of the few who can reign in and soothe So's anger, as well as bring out his gentler side.
  • Never Got to Say Goodbye: So was never with her when she dies.
  • Past-Life Memories: In the Grand Finale, Ha Jin is able to regain her memories as Hae Soo.
  • Plucky Girl: Even though by the end she becomes tired and jaded she still has her optimism as well as hope that she can make it through the rough patches and be happy somehow
  • Purity Personified: Honestly wishes to help the people around her as well as keep them happy. Many of the princes see her as a breath of fresh air or a ray of light in their existence.
  • Too Good for This Sinful Earth: The only thing she wished for was a peaceful life surrounded by the ones she loved but the cruelty of reality and the heartache she suffered took such a toll on her body that she died at a young age.
  • Trapped in the Past: She's from the 21st century but was stuck on the 10th for much of the series' run.
  • Unwitting Instigator of Doom: Two instances
    • Had she not helped So by covering his scar with the make up she created, then he wouldn't have participated in the ritual and he wouldn't have gained enough popularity with the people to be considered a threat by his brothers.
    • Had she not warned Wook of how dangerous So was and how he would most likely become king by force, then the rivalry and tension amongst the brothers would not have escalated to the point where they actively tried to kill each other
  • Wide-Eyed Idealist: She believes that she could convince the princes to stop their in-fighting and that they could all live in harmony
  • You Already Changed the Past: She receives glimpses of the future, in addition to remembering her history lessons, and thinks she can prevent the heartbreak from taking place but not realising until almost the end that she's actually the one that (unknowingly) helped history to happen the way it did

     Wang So 
Portrayed by: Lee Joongi
The 4th prince, son of King Taejo with the Queen Yoo. Was scarred on the face by his mother when he was a child, leading him to be ostracized and repudiated.
  • Acquired Poison Immunity: Was lucky enough to develop this under the care of the General.
  • Animal Motif: He is always compared to a wolf.
  • Because You Were Nice to Me: A surefire way to gain his loyalty.
  • Berserk Button: Do not look at his scar or even say anything about it.
  • Brooding Boy, Gentle Girl: His relationship with Hae Soo
  • Byronic Hero: He the rezident Troubled, but Cute prince, with a lot of mommy issue. Is intelligent, cunning, jaded but also hostile and obssessive. He is desperately possessive of Hae Soo.
  • Desperately Craves Affection: And how, he gets easily attached to whoever treats him decently. Granted, many of his family members and almost the entire country sees and treat him as the lowest of scum or are actively terrified by him.
  • The Dog Bites Back: After years and years of being pushed around and abused, he decides to take a stand and overthrow his older brother, Yo, and take the throne
  • The Dreaded: At the beginning, any mention of So was accompanied with a horrified comment over how he was a savage or an animal. It even comes to a point where a group of bandits who had cornered Jung, Hae Soo and Wook, promptly escape when they see him arrive, even though they outnumbered him.
  • Every Scar Has a Story: Years before the start of the main story, his mother lost a baby, leaving her devastated. Unfortunately, at that time there was trouble brewing at the borders and the King, in an effort to prevent a bloodshed, decided to marry another lady to have her clan help in his cause. This, combined with her recent loss, pushed Queen Yoo to the edge and threatened to take her life along with Wang So's, who was a small child. The King managed to wrestle the knife away from her but in the struggle they hurt their son, leaving him scarred.
  • Four Is Death: He is the 4th prince and the 4th king in the story and majority of the people treat him as a bad omen.
  • He Cleans Up Nicely: After he's formally received in the palace, he uses clothes that are more elegant and has a more princely appearance in general, something that Hae Soo notices and praises.
  • Heroes Prefer Swords: The male lead is known for his swordsmanship.
  • Heroic BSoD: Suffers one after fulfilling his younger brother's request and despair.
  • Hidden Depths: Many believe that he's a savage or an animal, calling him a wolf-dog. However, he shows time and again that he's quite intelligent, making a genuine effort in learning and is actually rather gentle. Granted, he reserves that side to the people that showed him kindness without expecting anything in return.
  • Kick the Dog: Several of the interactions he has with his brothers, especially Wang Yo, and his mother tend to go this way. Whenever he let's himself believe that he will finally be accepted, something happens that destroys that hope.
  • Loners Are Freaks: He mostly keeps to himself and is treated by many as a pariah.
  • Mommy Issues: So freaking many. Several of his actions in the series are fuelled by his desire of having his mom just once acknowledge him positively. He had more than one opportunity in the beginning to sell her out and instead he cleaned up after her, protecting her schemes, only for her to reject and humiliate him. It's no wonder that when Soo showed him an inkling of positive attention he got attached so fast and hard.
  • Never Got to Say Goodbye: He was never with So when she dies, much to his regret.
  • No Social Skills: Thanks to the fact that he was practically abandoned in the wild by the family that adopted him after the incident that scarred him, he tends to use violence as a suitable response to almost any given situation. He manages to somewhat grow out of it as the story progresses but there are still instances where he shows that side, like when he told Hae Soo he was willing to kill the man she was interested in, if it meant she would stay by his side.
  • Peek-a-Bangs: He uses his fringe along with a half-mask to hide the scar on the left side of his face.
  • The Promise: Because he didn't prepare a gift for Eun on his birthday, he promised him that he would give him anything he asked for. This comes in play two times and both times it doesn't end well.
  • Taking the Bullet: Well, more like drinking the poison. One of his mother's schemes involved poisoned tea served to the Crown Prince, Wang Moo, by Court Lady Hae Soo. Wang So drank the tea in order to spare both his brother and his love. Unfortunately, it doesn't work as he wanted
  • Undying Loyalty: To anyone who shows him genuine kindness and love. The list is, unfortunately, short.
  • The Unfavorite: Painfully so, his mother never hid the fact that out of her 3 children, he was the one she cares for the least, even stating more than once that she hates him.
  • Warrior Prince: Under the care of the General, he becomes an adept fighter as well as strategist on top of being a member of the Royal Family.
  • "Well Done, Son!" Guy: With both his father and, especially, his mother. He tries really hard to be of use and have them acknowledge him but his efforts more often than not are met with indifference or disdain.

The Royal Family

     Wang Moo  
Portrayed by: Kim Sanho
The Crown Prince. Born before the creation of Goryeo, he was King Taejo's first son.

  • Big Brother Instinct: Seeing as he was the oldest of the princes, he tried to help or guide them.
  • Driven to Madness: Wook and Won poisoned the waters in which he bathe with mercury and as his body grew sicker, they also began to feed his paranoia and fear
  • Ill Boy: Has a skin condition, eczema, that nowadays is fairly easy to treat and contain, but at that time it could be very painful
  • Nice Guy: Even though he knows many of his family members don't want to see him on the throne, that doesn't stop him from being fair to everyone and worry about others
  • Nice to the Waiter: He treats everyone kindly, including those that are of lower status.
  • Sibling Rivalry: With Yo. He's the one that shows the most hostility against him but Moo tries his best to not let Yo rile him up.
  • Tall, Dark, and Handsome: He's the tallest prince at 6'2 and is just as good looking as the rest of them.
  • Warrior Prince: Though not as skilled as Wang So, he's a good fighter and had been send to military campaigns by his father.
  • You Are in Command Now: Succeeds his father as King after the latter's death.

     Wang Yo  
Portrayed by: Hong Jonghyun
The 3rd prince. The eldest son of King Taejo with Queen Yoo. Makes no secret that he wants the throne and works side by side with his mother to achieve this goal.

  • Annoying Younger Sibling: He is very antagonistic towards the Crown Prince.
  • Break Them by Talking: Likes to talk down and humiliate the people around him
  • Big Brother Bully: To most of his siblings, especially So. He likes to pick on their weaknesses and manipulate them.
  • Bow and Sword, in Accord: He fights well with both a bow and arrow as well with a sword, but the former is clearly his Weapon of Choice.
  • Dies Wide Open: His eyes are giving a desperate stare as he dies.
  • Evil Prince: The most cruel of the prince.
  • Flaw Exploitation: His favourite method to undermine others and have them in check.
  • It's All About Me: Just like his mother, the one thing he wants is power for himself, consequences be damned.
  • I Have Your Wife: Threatens Hae Soo's life to keep Wang So in line and have him do the dirty work
  • Kick the Dog: Another one of his hobbies. He especially likes to do this to Wang So. Case in point: during Eun's birthday party he realised that So looked particularly happy so, he manipulated his youngest brother and Hae Soo into making So remove his mask as part of a birthday wish making So feel humiliated and hurt.
  • Manipulative Bastard: Oh so much, just like the previous entry showed, he could get people to do what he wanted by making it seem like he's being a caring brother.
  • Moral Event Horizon: He does really terrible things throughout the story but his decision to slaughter his younger brother's household as a means to ensure the throne and forcing Wang So to personally do it is quite heinous
  • Never My Fault: Blames his brothers for any setback in his plans, blames his mother for pushing him to do all the scheming and plotting, blames Hae Soo for his guilt and paranoia, accusing her of bringing bad luck never once realising that he could have chosen to, you know, not do the things he did.
  • Puppet King: What his mother wishes him to be
  • Smug Snake: Again, so much. He likes to flaunt his evil deeds on his enemies' faces, mocking them for falling for his traps and schemes.
  • The Straight and Arrow Path: His Weapon of Choice is a bow and arrow.
  • Tall, Dark, and Handsome: He and Wook both stand 6 feet and both of them are certainly good looking.
  • Tall, Dark, and Snarky: The tallest of the princes along with Wook and certainly the most ruthless and is overall unpleasant.
  • Villainous BSoD: After taking the throne and ordering the death of one his younger brothers, his paranoia and guilt start to show increasingly to the point he isolates himself and becomes obsessed with religion, seeking to appease the "spirits" of those he harmed.
  • White Shirt of Death: Dies while wearing a white robe.

     Wang Wook 
Portrayed by: Kang Haneul
The 8th prince. Son of King Taejo with Queen Hwangbo, full brother of princess Yeon Hwa. He was married to Lady Hae, Soo's cousin.


     Wang Won  
Portrayed by: Yoon Sunwoo
The 9th prince. He's closest to Yo and actively helps him in his quest for the throne.

  • Alliterative Name Wang Won.
  • Even Evil Has Loved Ones: Although he was rather unrepentant about the pain he caused to his family, by the end is proved that he actually cared a lot for Chae Ryung. Still, that didn't stopped him from putting her in danger.
  • Smug Snake: Even more so than Yo, even though half the plans he works with are his eldest brother's to begin with, yet he likes to act as if he's the smartest and best amongst his siblings.
  • The Starscream: He likes to stick with the one brother who seems to have the power but that doesn't stop him from trying to save his own skin or get more power at the expense of them.

     Wang Eun 
Portrayed by: Byun Baekhyun {EXO)
The 10th prince. His family is quite influential and has little to no interest about the political scene in the palace.

  • Annoying Younger Sibling: Most of the elder princes are clearly annoyed at him for his immaturity.
  • Arranged Marriage: To Soon Deok. In a rather hilarious scene, after the king decides to have a wedding in order to celebrate the arrival of the rain, her father manages to convince him that the most advantageous match for his daughter would be this prince and that the rest of them wouldn't make a proper son in law for him
  • Cruel and Unusual Death: Shot by an arrow twice before asking So to Mercy Kill him.
  • Despair Event Horizon: When Soon Deok is killed protecting him. He just gives up
  • Hopeless Suitor: For Hae Soo. She never saw him as anything other than a younger brother, which he knew, but that still didn't stop him from pining for her.
  • The Ingenue: Like Hae Soo, he believes the people around him won't hurt him. It's quite heartbreaking when Yo orders his death along with that of his family and Eun still believes that his brothers will help him
  • Innocently Insensitive: Due to how immature he was, he didn't put much thought into what he said often coming across as rude or too direct but he didn't do it out of malice.
  • Kill the Cutie: One of the most happy-go-lucky characters that only wished to be happy and play around, killed in one of the most cruel of circumstances
  • Little Big Brother: Not only is he shorter than Baek Ah and Jung, he's also the most immature
  • Manchild: Out of all the princes, he's the most childish.
  • Mercy Kill: He asks So to take his life partly because he was already badly hurt thanks to Yo's arrows and because he couldn't let Soon Deok be all alone in the afterlife.
  • Oblivious Younger Sibling: Totally in the dark regarding his eldest brothers plans and intentions.
  • Perfectly Arranged Marriage: It took a while and their time was cut short, but he was truly happy with his wife
  • The Promise: On his birthday celebration, So was the only one who didn't prepare a gift. Because of this, and thanks to Yo's manipulation, he gets So to promise him to give him anything he asks. This comes in play two times and both times it doesn't end well.
  • Shoo Out the Clowns: The story is already getting darker before he dies. But once he (and his wife) do, things just went From Bad to Worse.

     Baek Ah 
Portrayed by: Nam Joohyuk
The 13th prince. Son of King Taejo with a lady from the Silla clan, once one of the most powerful clans but that later on lost their influence, which is the reason that while he's a prince, he doesn't have the same status as the rest of his brothers and has more freedom.

  • Cartwright Curse: The two women he loved in the series both never made it out alive.
  • Hopeless Suitor: For Lady Hae. Due to his family losing status he couldn't ask for her hand and then he find out she was in love with his older brother Wook.
  • I Want My Beloved to Be Happy: Even though he couldn't marry her, he visited and looked after Lady Hae, entertaining her with music and conversation. He worried about her health and the fact that Wook was falling for Hae Soo, something he called them out on.
  • Like Brother and Sister: With Hae Soo. The two were best friends and looked out for each other.
  • Nice Guy: One of the most genuinely sweet guys the show had. He looked after his brothers, especially Eun and Jung, and was supportive of So, as well as Soo.
  • Odd Name Out: The only prince who doesn't go by Wang.
  • Pretty Boy: In-Universe, more than once is pointed out that he's one of the best looking of the princes.
  • Sensitive Guy and Manly Man: The sensitive to So's manly man. He rather play music and draw than learn about the military and fighting.
  • Star-Crossed Lovers: With Woo Hee. His family was the reason she lost her country and even when they manage to spend time together, there are several circumstances that separate them and ultimately drive her to death
  • Taking the Bullet: He gets in the middle of the king and Woo Hee, letting her stab him. Luckily, the wound is not life-threatening and because of the sudden collapse of the king, no one saw or realised there was an assassination attempt

     Wang Jung 
Portrayed by: Ji Soo
The 14th prince. The third son of King Taejo with Queen Yoo, full brother to Yo and So. He's the youngest of the princes.

  • Did Not Get the Girl: An interesting case. He didn't manage to win Soo's heart but he was able to marry her and was with her to the end
  • Hopeless Suitor: For Hae Soo. Same as Eun, she saw him as a dear friend and a young sibling but he was romantically interested in her. Unlike Eun, though, he did try to keep his distance.
  • I Just Want to Be Badass: Since young his greatest desire was to be a formidable fighter, however, he tended to get in over his head and he had to be rescued or protected.
  • I Want My Beloved to Be Happy: Even though he knows that would make her unattainable for him, he tries to find ways to have Hae Soo marry Wook (her first love) and then, years later, marries her himself as a way to take her out of the palace to give her some peace in her final days.
  • My Beloved Smother: He loves his mother, but she's quite overbearing and overprotective of him which wouldn't be that much of a problem if she didn't punished or outright destroy anyone who she believes looked at him the wrong way.
  • Never Got to Say Goodbye: So deliberately isolates their mother to himself during her final hours.
  • Oblivious Younger Sibling: Not as much as Eun, but he truly had no real idea of what were Yo's plans or intentions. As the story progresses he starts learning more but not enough.
  • Warrior Prince: Much like So, he is known as an excellent combatant.

     Yeon Hwa 
Portrayed by: Kang Hanna
Daughter of King Taejo and Queen Hwangbo. Full sister to Wang Wook.

  • Aloof Dark-Haired Girl: Always appear regal and is a very manipulative and overall nasty person.
  • Determinator: She doesn't give up on her goal of reaching power, not even when the odds are against her.
  • Faux Affably Evil: She tends to put on a facade as a well mannered princess that wants nothing more than to please her elders, especially in front of the King. But, when she's alone with someone she dislikes, the facade comes off and she shows her true colours.
  • Green-Eyed Monster: Though she tries to hide it, it's obvious that she resents Hae Soo for winning the heart of So, even though it was Yeon Hwa who married him
  • Politically Active Princess: She's quite clear about her goals, either she'll be a kingmaker and place her brother on the throne or she will be Queen and wield the power herself
  • Silk Hiding Steel: She may not know how to fight, but when it comes to schemes and manipulation she's amongst the best.
  • Unwanted Spouse: If Wang So wanted the support of the Court and the clans, then he had to marry Yeon Hwa. He made it clear that she was the Queen to the country, but she would never have his heart.
  • We Can Rule Together: Was offered this by Yo and she offered it to So.

     King Taejo 
Portrayed by: Jo Minki
The first king of Goryeo.

  • Founder of the Kingdom: He unified the Three Kingdoms and founded Goryeo
  • King on His Deathbed: By mid-story, he collapsed and from then on the palace is in disarray. He only has Hae Soo by his side and leaves her with instructions regarding the succession of the throne while several of his children are poised to take it by force the instant they hear he's passed away.
  • Outliving One's Offspring: Some of his children died before him.
  • Parents as People: He loves his children, however, as king there are certain things he needs to do to ensure that he can keep the throne and so he has to think of the wellbeing of the country before the happiness of his children or his own.
  • Parental Neglect: Not the worst example (he does keep tabs on his children and provides for them when he deems it necessary, like with Wang So and the masks he ordered for him) but he also won't win father of the year. He's rather distant and in more than one occasion fails to realise how much damage he's done because he never formed a constant interaction with them.

     Queen Yoo 
Portrayed by: Park Jiyoung
One of the many wives of the king, also one of the most influential and powerful.

  • Aloof Dark-Haired Girl: Always appear regal and is a despicable human being.
  • The Chess Master: She's the one that gives Yo the foundation for his plots, providing the resources and thinking out the possible outcomes to their traps and how to spin it if there was a negative result.
  • Evil Matriarch: While the king is still very much alive, she has the palace under her control and has destroyed the lives of the people that have angered her or one her beloved sons.
  • God Save Us from the Queen!: She doesn't seem to particularly care about the lives of the people in the country and has more interest in that her clan has the power over everyone, even if it means bloodshed and turmoil.
  • Green-Eyed Monster: She hated Court Lady Oh because the king loved her
  • It's All About Me: While she wants her son to be king, ultimately her goal is to increase her own power.
  • Mama Bear: Mainly with Jung, she goes after anyone who dares lay a hand on him.
  • The Man Behind the Man: She wants either Yo or Jung to be crowned king so she could control them and stay in power.
  • My Beloved Smother: Well, only if your name isn't Wang So. It's more obvious with her youngest, Jung, who she tries to keep by her side at all times and whenever she thinks someone is giving him so much as a wrong look, she will try to destroy that person.
  • Parental Favoritism: She clearly prefers Yo and Jung over So.
  • White Shirt of Death: Dies while wearing a white robe.

     Queen Hwangbo 
Portrayed by: Jung Kyungsoon
Another of the many wives of the king, her household was amongst the most influential but her clan lost some of it due to one of Queen Yoo's schemes

  • Good Parents: Supportive of her two children.
  • Mama Bear: She protects her children as best as she can and she's willing to humiliate herself to keep them safe from Queen Yoo.
  • Passive-Aggressive Kombat: Almost every interaction she has with Queen Yoo.

     Lady Hae 
Portrayed by: Park Sieun
The wife of the 8th prince and Hae Soo's cousin.

     Park Soon Duk 
Portrayed by: Z.Hera
The daughter of the Grand General. She's known the princes since she was little but hasn't been around the palace due to her accompanying her father in his campaigns.

  • Action Girl: She's trained in combat since she was a child and is the best female combatant in the series.
  • Adorkable: She's quite earnest and kind
  • Arranged Marriage: As a way to celebrate the arrival of the rain, the king decided to have her wed one of his many sons. Her father manages to get her a marriage with the prince she loves
  • Because You Were Nice to Me: The main reason she fell for Eun. While she felt left out by the other girls, he approached her and gave her a flower trying to cheer her up
  • Childhood Friends: With the youngest of princes.
  • Clingy Jealous Girl: She's generally a Nice Girl, but she acts a little bitchy towards Hae Soo due to Eun's obvious affections for her.
  • Daddy's Girl: Her father dotes on her and does whatever he can for her.
  • Died in Your Arms Tonight: Dies in Eun's.
  • Green-Eyed Monster: Is jealous of Soo because Eun loves her.
  • I Want My Beloved to Be Happy: Was willing to let Soo become Eun's second wife to keep him happy.
  • Military Brat: Her father is the Grand General.
  • Missing Mom: It's never outright stated what exactly happened to her mom but it's a given that she's no longer in the world.
  • Named After Somebody Famous: It's very likely that she's named after Queen Seondeok, Silla's first female ruler.
  • Nice Girl: While she did have her friction with Hae Soo (which was mostly one-sided on her part), she's never outright malicious and cares deeply for her loved ones.
  • One of the Boys: She practices and play-fights a lot with Jung and the soldiers
  • Raised by Dudes: Her dad has taken care of her since she was young
  • Spell My Name with an "S": Is it Duk or Deok?
  • Taking the Bullet: She pushes Eun out of the way and is cut down
  • Tom Boy: In contrast to many of the ladies in the show, she's more adept at fighting than most (including some of the princes) and is more comfortable using armor rather than the dresses a woman of her station would be expected to use.

     Park Soo Kyung 
Portrayed by: Sung Dongil
The Grand General of the armies of Goryeo and one of the closest confidants for King Taejo, with whom he fought side by side.

  • But Now I Must Go: Once he helped overthrow Yo and took back the palace as a way to avenge his daughter and son in law, he decided to retire back to his hometown
  • Doting Parent: So much, he would do whatever he can to ensure his daughter's happiness even if he doesn't agree completely
  • Good Parents: One of the few examples the show has to offer. Unlike the rest of parents, he doesn't resent, smother or view his child as a political piece to acquire more power for himself.
  • The Mentor: He taught So everything there is to know about fighting and strategy.
  • Outliving One's Offspring: After Soon Deok's death.
  • Parental Substitute: To Wang So. He practically adopted him at the behest of the King, and while it wasn't something made public, he became someone So respected and appreciated greatly.

The Palace

     Court Lady Oh 
Portrayed by: Woo Heejin
The Head of the Damiwon, has served the Royal Family for many years.

  • Mama Bear: She already lost a child to one of Queen Yoo's schemes, she wasn't going through that again.
  • Mentor Occupational Hazard: She's Soo's mentor and Parental Substitute and dies halfway through the show.
  • Outliving One's Offspring: She had a child with King Taejong that was poisoned by Queen Yoo.
  • Parental Substitute: She saw Soo as her daughter.
  • Proper Lady: She upholds the traditions and knows her place in the palace, always maintaining her decorum and dignity even when some may try to undermine her authority.
  • Reasonable Authority Figure: She's quite strict but she never punishes anyone unless they truly deserve it and even then the punishments aren't cruel or disproportionate.
  • Stern Teacher: She makes sure than none of the girls under her charge slack off and that they learn everything they need to do.

     Woo Hee 
Portrayed by: Seo Joohyun (Girls' Generation)
A mysterious sword dancer with whom Baek Ah forms a relationship. In reality she's a princess who lost her status.

  • Action Girl: While not as good as Soon Deok as fighting, she knows how to use a sword and is a very good spy.
  • Aloof Dark-Haired Girl: Always appear poised and always graceful.
  • Driven to Suicide: She jumps from the castle's balcony.
  • Fallen Princess: She was once a princess who lost her status due to her kingdom being conquered.
  • Second Love: For Baek Ah after the tragic fate of Lady Hae. Unfortunately, her fate is also tragic.
  • Star-Crossed Lovers: With Baek Ah. Not only is he a prince and she's a sword dancer but she's a princess who lost her country thanks to the Wang family, leading her to resent them greatly.
  • White Shirt of Death: Commits suicide while wearing a white robe.

     Choi Ji Mong 
Portrayed by: Kim Sungkyun
The Royal Astronomer and a close friend of the Crown Prince. He seems to know more than he let's on about what happened to Ha Jin and how she came to Goryeo.

  • But Now I Must Go: At the end of the series he decides to leave because he feels that he has avenged his friend, Moo, and that So would be fine without him.
  • Cryptic Conversation: A master of this. He never truly reveals anything to the frustration of many around him, especially to Hae Soo.
  • Eccentric Mentor: What the princes see him as, mainly because he spends his time trying to find a way to fly and also because of how nonsensical his talk about the stars and alignments tend to get for them.
  • Fish out of Temporal Water: It seems he went through the same thing as Ha Jin but it happened when he was younger, he drowned as a kid and was dead for a day before waking up. He says that because he was a child he doesn't quite remember what exactly happened but he still has some of his memories about what the future is like so he sometimes speaks of things that are yet to be created, like airplanes

     Chae Ryung 
Portrayed by: Jin Kijoo
Hae Soo's maid, has been by her side since she went to live with her cousin and the 8th prince.

  • Cruel and Unusual Death: So orders her to be beaten to death using lumberjacks.
  • I Owe You My Life: She feels this way towards the 9th prince, thanks to him offering her protection when she was just a child
  • The Mole: She spies on Hae Soo, Wang So and Moo on behalf of the 9th prince and was the one who helped him poison the Crown Prince's baths with mercury
  • White Shirt of Death: Beaten to death while wearing a white robe.


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