Kronya is an antagonist from Fire Emblem: Three Houses and Fire Emblem Warriors: Three Hopes. She hails from Agartha and is one of Those Who Slither in the Dark. Kronya infiltrates Garreg Mach Monastery's Officers Academy by posing as Monica von Ochs, an about-to-graduate Black Eagles student who had gone missing a year prior. During the Horsebow Moon of 1180, the Death Knight kidnaps Flayn; when Byleth and their class rescue her, they find an unconscious Monica at her side. Monica quickly recovers and re-enrolls in the Officers Academy as a member of the Black Eagles. Other students and members of the Monastery observe that she's grown quite close to Edelgard and her personality has completely changed. Her personality shift is largely attributed to her apparent year in captivity, though in reality, it's simply Kronya's true personality peeking through her disguise. Kronya reveals her true identity after Those Who Slither in the Dark are defeated by Jeralt, Byleth, and some of the students of the Officers Academy while experimenting on other students. As Monica, Kronya pretends to have been one of the captives, approaching Jeralt to thank him, but once he turns his back on her, she stabs him. Byleth attempts to use Sothis's Divine Pulse to stop her, but Thales appears and blocks Byleth's attack on her. She expresses shock that Thales made an appearance, but he teleports her away with little explanation. Later, Thales and the Flame Emperor chide Kronya for her carelessness, as her death would have revealed the truth behind Those Who Slither in the Dark's identities. Thales has Kronya team up with Solon, a prospect she expresses excitement for. Kronya engages Byleth and their students in battle once more, taunting them and revealing her true appearance, but is defeated. Before Byleth can cut her down, Solon appears and grabs Kronya's heart, to Byleth's apparent shock, using her in order to enact a ritual to banish Byleth to the dark dimension of Zahras. Kronya's sacrifice ends up for naught, as the power of Sothis frees Byleth from this dark dimension and Solon is killed shortly thereafter. Kronya appears as a cheerful young woman whose childish disposition belies her underlying brutality. She is sadistic and cruel, reveling in inflicting pain on others. During her fight, she looks down upon those she believes inferior to her and refers to enemies as "vermin". She shows surprise when Solon turns on her and is not above pleading for her life, as her final words were asking Byleth to save her despite being enemies. While disguised as Monica, Kronya made no attempt to replicate her personality. While this drew attention to her, and Hilda was suspicious of her, most other students chose to ignore Monica's "personality shift" as they believed it was merely a coping mechanism after her 'kidnapping' ordeal. In Three Hopes, her cruelty reportedly extends to her subordinates, who worry that she will kill them for failing to keep Monica detained. In Fire Emblem Heroes, Kronya's bloodlust and scorn extends even to Kiran, and as a Hero, she is cynical of her allies, believing that they fight for peace only because they don't share her enjoyment of slaughter. However, upon reaching Level 40, it is shown that she is apparently still somewhat capable of emotional attachment; she begrudgingly admits this to the Summoner as a result of their many battles together, irritated at its contrast with her nature as an Agarthan. Kronya is a psychotic, murderous, and sadistic assassin who has a childish streak, which annoys the Flame Emperor and even several of her comrades. Her childish behavior hides her severe brutality and bloodlust, remorselessly backstabbing her victim with a smile on her face. She also acts arrogant towards her enemies, calling them vermin. However, despite her sadistic nature, she is shown to be a pathetic coward, as best seen in her last moments, where she ran away from Byleth after her defeat and begged them to save her, as she was betrayed by Solon and was about to be sacrificed for his ritual. Kronya is also shown to be too crazed, as she makes no attempt to emulate the personality of Monica von Ochs while impersonating her, causing people to note "Monica's" radically different demeanour, though they dismiss it as her way of coping with her kidnapping, which would lead to Kronya turning the students into Demonic Beasts and attacking Garreg Mach. Despite her shadowy nature, she gets a lot of attention for her strikingly pale appearance and her expressive eyes. She wears a black sleek, sleeveless outfit which reveals a little bit of her body but not too much and has fingerless blackgloves. she wears black heels. she has red eyes and short orange hair covering part of her eye.

sadistic, cruel, childish, evil