Were you in Hunters’ Game or Murder Manor? Yes, in both, as Beat and Rin.
Second character? Nope!
I have read the rules and understand the activity requirements: Yes!
Name: (Insert name here) and "The Rose Duelist" in canon; I've given her the name "Harriet Vaughn."
Canon: Yu-Gi-Oh: The Duelists of the Roses | also coming in with CR from the_campus
(Brief) Canon Description England's War of the Roses, only the entire war is waged with a card game, and the historical characters involved look suspiciously like the main cast of Yu-Gi-Oh!
Personality/Background At the beginning of Duelists of the Roses, the Lancastrians (who use a red rose as a symbol) are losing their Incredibly Serious Card Game War. In a last-ditch effort, they use Stonehenge and powerful cards of magic, the Rose Cards, to summon a "legendary Rose duelist" in order to turn the tides in their favor. The Lancastrians possess the 8 Red Rose Cards - their enemies, the Yorkists, possess the 8 White Rose Cards. It is the Rose Duelist's task to win the rose cards from the other side. As soon as they are done explaining, the Yorkists show up and offer the duelist a chance to join their side instead.
Harriet represents the duelist from the White Rose side of the game. Though the Rose Duelist is canonically a silent protagonist, a lot can be gleaned from this rather huge choice - it means that, when the Lancastrians summoned her to be a hero and save the day, she basically gave her summoners the finger, dashed their hopes and took the quickest exit she could find - Rosenkreuz, the leader of their Yorkist enemies, who had made them desperate enough to summon her in the first place. She's a selfish person that doesn't trust people blindly, but would ally to whoever had the most power. While dueling the gauntlet of Henry "Yugi" Tudor's friends and allies, they all speak of the Rose Duelist as a treacherous betrayer, a villain. While the reality is not quite so black and white, it is at least true that she's willing to deceive people to meet an end.
Of course in her mind, she is completely in the right. If anything, she's just too stubborn in her pure realism to see "called to arms for great justice" instead of "kidnapped to fight in a stupid power struggle." She would never hold back despite being demonized for it. In that sense, she's a strong person, one who follows her path no matter what anyone says.
That being said, she still came from the modern age, where she used to be a regular duelist. So coming from such origins, she's actually pretty average. On the surface she seems upbeat and friendly enough. Her inevitable shrewdness was a huge surprise to the Lancastrians. This also suggests that she can bury her true feelings pretty well to act normal, and in the beginning, when helping them appeared to be her only option, she would have certainly had to do this. When she needs to shelve her emotions, her usual tactic is to cover them up with humor or sarcasm. She does the same thing if she's in trouble or suffering, not liking to show weakness to anyone.
As her actions show, her chief motivator is getting herself home. Being stuck in the 1400s is obviously a huge culture shock, and would be enough on its own to make anyone freak out. Per my headcanon, as well, she also has unfinished business at home. In the War of the Roses and also in the_campus, being away from her world makes her increasingly weary and anxious. Trapped in time, and then subsequently trapped on an island in nowhere - She often gets frustrated about the time passing and worries about whether, by the time she's made it back, she'll have changed so much she won't even fit into her own life anymore.
For the rest of her personality, I turn to symbolism. As the white rose duelist, Harriet holds some values that are attributed to white roses - the concept of innocence, in particular, is important to her. Mostly this manifests when she feels internal conflict because of her own loss of innocence. Her opinions and reactions to others can also be changed one way or another based on whether or not she perceives someone as an innocent. It's not an extreme bias as she's willing to associate with some very shady types, but she'd want to protect an innocent if she could. Another 'white rose' trait is honor, which she has a fair amount of as a duelist. She would never cheat to win.
Sample: Since I'm going out on a limb with this character and you'd suggested a game app, I thought it'd be good to provide you with one of these! Here is a post of hers from the Campus.
Entry Fee Harriet will lose her deck, as that is the most important thing to any duelist, as well as being her main weapon and source of power.
She will also lose her Campus memories of Jack Cade, as per the 'forget resolutions to guilt' rule.
Skills Apart from being a skilled duelist, she also has training in using medieval weapons, particularly swordsmanship, but archery as well. She can ride horses too.
Items A big white cloak with a rose on the front. She also never goes anywhere without her sword, even in the Campus.
Guilt or regrets
Harriet has conflicted feelings about choosing the white rose. Even if she ultimately doesn't let it change her, she doesn't actually feel good about betraying the Lancastrians. You couldn't call it regret, but guilt - a bit. Mostly, she just never asked for this.
She doesn't actually have any regrets as far as her actions in the war, but she does have guilt over one more thing. In the duel with Jack Cade (the equivalent to Bakura), he mentions that he is a master of the Dark Duel, which in Yu-Gi-Oh (especially considering who he's the canon complement of) can only mean Shadow Games. Losing in a Shadow Game NEVER ends well. Harriet won, but Jack's fate (assumed to be death for our purposes here) weighs heavily on her conscience.
The main way the canon events affected her guilt was in the way that she views herself. She was once an innocent, a regular person. Now, she's become a champion in a Very Serious Card War, and her innocence is lost. Though she followed her version of righteousness, to that world she was a villain and a traitor. She does not think of herself as a 'good' or 'nice' person, even if she was 'right.'
Early on in her Campus life, she was mind-controlled by Malik Ishtar using his Millennium Rod. He used her to attack King Henry, whom she'd become on somewhat better terms with, but was still awkward and conflicted towards. While she'd normally have a strong enough will to resist the influence, her anger and resentment were manipulated against her, and her considerable strength as a duelist used as a weapon. Even after putting aside what he did, she still feels bad for having that weakness.
Harriet also feels responsible for the in-game deaths of both Rosenkreuz and Yami Malik, who were fighting each other, because she had the power to stop time (via her Rose Cards, basically canon MacGuffins that she was in possession of) to save Rosenkreuz from Yami Malik's attacks and didn't manage to use it in time. Rosenkreuz was her sorta-boss which was bad enough. Malik's death wouldn't have been a regret at the time, except that he wasn't actually killed by Rosenkreuz, but by her close friend Eleanor who had never killed before. So it's another 'loss of innocence' problem as well as responsibility for deaths. Though the lack of permanent death in the game helped a bit, this one's still a big one because of that. If she could undo any mistake it'd be this one.
After both sides of their little feud had suffered a casualty, the Rose Duelists and Malik/Bakura had declared a truce. In this context, the focus of the conflict shifted to be against the Campus's jamjar setting instead of each other, and as the stagnant, trapped feeling grated on them both, eventually she and Malik made a bargain for power and an alliance to try to bust out. However, in doing so, she was going behind the backs of the people she wanted to protect, and generally being shady. Their partnership ultimately turned out to be pretty beneficial and didn't cause anyone actual harm, but she still can't ignore the fact that she lied to her team. It hurt her as she was doing it, though she tried to bear it, and it hurt them when they found out. Pretty weaksauce as her Campus guilt goes but still worth mentioning.
In this game, her guilt over Jack Cade was resolved somewhat because she met another version of Jack and she did her best to make amends with him by giving him her Rose Cards. She will forget this ever happened.
After her alliance with Malik became more solidified and extended to his partner-in-crime, Yami Bakura, they started working together and Harriet found herself becoming used to him, even to the point where they're capable of having pleasant conversations, while before then she was sorely disgusted with him for possessing a teenage boy (whom she perceives "innocent" by the way) as a host body. The thing is, she still has a huge problem with that, so it's an ill feeling that she simply bottles up. Yet, it lurks beneath the surface and complicates their relationship. You could describe it as "guilt by association."
Plot involvement Sure.