Physic/Livvy is the physician of the Black Swan. In Nightfall, she is revealed to be Livvy, Quinlin Sonden's wife. She and Quinlin have a rickety relationship, fighting often. Livvy apparently was supposed to file a match fail, the elves' version of a divorce, but hasn't, so they're still together.
Physic was the person who helped Fitz after he was impaled in Exile (Neverseen). It was said that Physic was in the Collective until she couldn't always be there, so she gave her place to Juline Dizznee, as she was her doctor. It is said that the reason she gave up on being the Collective is so that she could focus more on medicine. This is because Sophie had an accident in the Forbidden Cities with limbium, something she is allergic to. The story doesn't go into detail about the topic, but it had something to do with Mr. Forkle and Physic.
In Nightfall, we learn that Physic is really Livvy Sonden, Quinlin's ex-wife, but not really, because they haven't filled out the divorce papers, also known as a match-fail paper, because of the shame that it would bring.
When working for the Black Swan, Physic wears a mask to conceal her appearance.
She has black skin, tiny, sparkly beads woven into her hair, full lips, and a softly rounded nose.
One of Physic's masks is Mardi-Gras-style and red, with a rim of gold glitter.
- Physic thinks that Mood Candy is delicious and stores lots of candy in the apartment.
- One of Livvy's favorite rooms in Quinlin's apartment is the pantry, especially when she's been doing the shopping.