Juliette Teeger, is the daughter of Adrian Monk's assistant, Natalie Teeger. She was named, at her father, Mitch's insistence, after her great aunt, Mitch's aunt Julie. Mitch admired his aunt for her bravery and her compassion, and also owed her for practically raising him from childhood. Natalie would later tell her daughter that the name suited her very well.
Julie has long, blonde hair she often wears pulled back into a ponytail. For some of the series, her hair appears darker, so that she is a brunette rather than a blonde. She has blue eyes and pretty features.
Julie's personality is like that of her mother's--perky and cheerful. She enthusiastically embraces Monk or her mother on several occasions when they did something nice for her, though the former was much less happy about that.
Initially, Julie was unsure what to make of Monk and his quirks, not unlike Benjy Fleming (Monk's former assistant's son). Though she found him a little amusing, she was easily impressed by his deductive abilities, even comparing him to Velma from Scooby-Doo. She comes to see Monk as a surrogate father.
She briefly went to the Sea of Tranquility exhibit at the science museum, and bought an aquarium from the gift shop for Mr. Henry, not realizing that the aquarium in question actually contained a priceless moon rock that was stolen by one of the tour guides at the museum.
She inadvertently became caught up with one of Monk's investigations when she was noticed by fashion designer Julian Hodge and asked, despite her young age, to model in one of his shows. She was ecstatic, to the point where, when Natalie forbid her to do it because Monk suspected Hodge of murder, she ran away from home to be in the show. But when Natalie confronted her on stage, she immediately felt sorry and agreed to go home with her mother.
Having seen his detective work in action enough times, Julie and her friends from the high school basketball team hired Monk to investigate when their coach was found dead in the locker room. They (rightfully) suspected that this was no accident. In addition to solving the murder, Monk briefly served as assistant coach to Natalie, filling in for the deceased coach.
An important bonding moment for Monk and Julie came when she was confused about her choice to break up with her current boyfriend, Tim, in favor of a dashing football star who was interested in her. For all his eccentricities, Monk knew more than a little about love, through his relationship with his wife, Trudy. Julie responded to his advice, and recognized which boy was right for her - a decision reinforced when Monk exposed the football star as a fraud put up by a killer, who was trying to mislead her and Natalie. Tim played a heroic role in saving the evidence that helped convict the killer, and won Julie's heart back.
Natalie admits that she has trouble saying no to her daughter; Monk also learned this when Julie begged to take her scheduled driver's exam, despite the fact that a killer seemed to be stalking women who shared her name.
She is seventeen years old (as of Season 7, Episode 3: Mr. Monk Gets Lotto Fever) — as per Natalie as she reads the lotto number '17'.
In the Season 8 episode Mr. Monk and the Critic, Julie performs in a theatrical production and sings "Away".
In Mr. Monk and the End, Part 1, Julie mentions to her mother, Adrian and Steven Albright that she is planning to move to Berkley when she starts college. Julie appears in flashbacks in Mr. Monk and the End, Part 2.
- Julie is allergic to dogs.
- At the end of "Mr. Monk and the Critic," she learns she has been accepted to the University of California at Berkeley, where she will major in theater and dance.
- Julie was likely named after Monk creator Andy Breckman's daughter Julie.