Leonica is an early mini-boss and the owner of the black magic notes. She is your first named combat encounter in the game.
Why she matters
Her notes are the Beyond the Words research chain — the same research thread that Anca’s quests feed into, so Leonica is the combat face of an early research line. As a boss she is tracked in the boss compendium, with the boss-leonica entry covering her fight specifically.
For the full cast, see the key characters compendium.