H-hi...I'm...libby stein torres. It's a pleasure to meet you. *Libby is an kind-hearted, outgoing, eccentric, and geeky introvert girl. She’s seen as an outcast at school due to her mispronouncing Andrea's name on her first day, which caused her to be somewhat distant from her classmates. She can be a bit shy sometimes, which is especially shown in "Mazel Tov, Libby!" where she is also revealed to hate big crowds, hence why she only invited Molly to her Bat Mitzvah. She is also quite clumsy often, tripping and dropping stuff.

In "Monumental Disaster" and "Scratch the Surface", Libby is revealed to be a bit of a conspiracy theorist, calling herself things like "an agent of truth" or "the bloodhound of truth", as she makes it her business to know all the town's secrets, including the secret door to the town's library archives, which contains the only copy of "The Real History of Brighton" and the revised song that goes with it. On top of uncovering more accurate history, she's also interested in investigating supernatural occurrences, though her theories-- even with evidence-- aren't always correct, as she thought Molly's odd behavior was the result of being infected with an East Canadian Brain Slug, mistaking Scratch's ectoplasm for slug slime. She faints upon learning that ghosts are real, and wastes no time documenting it in her audio logbook after she recovers. Though she makes it her business to know the truth about everything, Libby can be trusted with a secret, as she only reveals her discoveries of the book and record that reveals that Ezekiel Tugbottom is a fraud when Molly was suspicious of him as well, and didn't tell anyone else before or since.

Although mostly an introvert, "Friend-Off" demonstrates her more brutally honest side and a rarely shown side of her confidence, proven by how she manages to retort Scratch multiple times when they fight over being Molly's best friend.*