Kathryn Lapucelle

About
During the Arthur Tragedy, Kathryn Lapucelle was a Ten Knight of Eden, stationed in El Quixote to defend Kalar Forest and Kalar Village, with ten knights under her command. Despite her rank, the knights considered her to be inexperienced, and when they were attacked by overwhelming numbers of monsters, they put on a cruel act to get Kathryn to safety at any cost. By the time she managed to free herself, her detachment had been slaughtered, and she had inadvertently been named hero of the hour. After this misunderstanding and the death of Eden's ranking Zero Knights, Kathryn was promoted to Zero Knight, a title she resents.

Ashamed and introverted, Kathryn managed to negotiate a position far from Eden,on the Lancelot-El Quixote border. There, she conducted research and created numerous inventions. Several years later, Kathryn's solitude was interrupted by her childhood friend, Riche Eden and Ramius Dreissen, as well as their husband, Aster. After helping them out during political crises caused by the Snake Crest in both Lancelot and El Quixote, Kathryn mistook Aster's aggressive flirting as a marriage proposal and confusedly accepted. The two of them sorted things out after a few comic mishaps, and got married consensually, after which Kathryn joined the others in their mission to destroy the Snake Crest.

Personality and Appearance
Kathryn is a stubborn introvert, and has deep trouble admitting her feelings for anyone she cares about, such as her husband or best friends. She has strict boundaries, and does not like to be touched, to discuss sexual matters in public, and all sorts of other problems that tend to be exasperated by the very people she now lives with. She tends to refer to her friends by nicknames, such as addressing Gurigura as "Tiny," and can be quite rude more often than not. Her closest friends are nonhuman, including Lorenzo Kalar and a pair of Haniwa, although the latter is a tenuous friendship, as she has murdered them in the past. Luckily, Hannies can be easily repaired with superglue.

Kathryn is something of a mechanical genius, having invented things like the hot-air ballon and the steam engine, which she powers using a trained Uppi named Mr. Edison. If given the opportunity to discuss something that interests her, Kathryn will carry on for hours.

Kathryn is a big, but secret, fan of otaku hobbies, such as trading card games and manga. She especially likes BL manga, though she seems to have trouble actually embracing homosexual relationships in the real world. All of her sexual knowledge comes from manga, which led to at least one embarrassing boast to Lorenzo Kalar. Notably, Kathryn's outfit is actually a cosplay that she created herself.

Abilities
Kathryn is a Tactician, a knight trained to organize and support other knights in combat. She can bolster her allies' abilities, enable them to perform additional actions in battle. She can even patch wounds, which she can do more frequently but not as effectively as a mage with healing magic. Kathryn is also trained in the use of crossbows, and is even able to throw an apple as a weapon for her Mercy Attack skill.

As a Zero Knight, Kathryn is considered to be among the most powerful warriors in the world, or at least one of the most powerful Tacticians. Unfortunately, her promotion was based on a misunderstanding, and Kathryn did not truly come into that level of ability until late in her journey with Aster. Still, her rank is upheld, and she is even able to wear Zero Knight equipment. As a Zero Knight, she possesses the ability to kill people under Mother Eve's blessing without becoming an Outlaw, and can marry ten people, although she is currently only married to Aster.

Trivia

 * Kathyrn's surname, Lapucelle, is a reference to Joan of Arc, La Pucelle d'Orléans (The Maid of Orleans).
 * This is another instance of Edenites using the French language in their names.
 * While Kathryn's outfit is said to be cosplay, we are not told what character she is cosplaying.
 * Her Yulan Gear costume may also be a cosplay, seemingly a "sexy cosplay" of Retia Adolf from Alicesoft's Daiteikoku.