Robin is the daughter of Daniel Charles and his first wife CeCe. Through her father she has a younger half-sister, Anna Charles. She was falsely diagnosed with schizophrenia, which was later discovered to have an organic cause - a benign mediastinal teratoma.
She first appeared in episode 4, "Brother's Keeper".
Robin is readmitted to the hospital after having an episode while staying with Connor. Sarah believes that her illness may not be a psychological issue, but she runs tests which all come back negative. Her father suggests a paraneoplastic syndrome which turns out to be the right diagnosis. She has the tumor removed. When she wakes up, she sits with her father and appears to do remarkably better. (Love Hurts)
Robin is released from the hospital after a few months of treatment. She's warned about the side effects, which Connor begins to recognize when they get home. (Speak Your Truth)
Robin appears to be okay. She worries about her condition after believing she was hearing rats in the ceiling of her office on her first day back at work, but it turns out to be a problem with the air conditioning.
Robin tells Connor that she's been shopping a lot more recently, mostly impulse purchases. However, Connor gets a call from someone at his father's store that they've detained her as they caught her attempting to shoplift. She breaks down, saying that she doesn't know what's going on with her.
Robin leaves a note for Connor to say that she is leaving. Her father takes her to the airport where she flies to Minneapolis in order to be with her mother. (Ties That Bind)
In the season 4 episode "We Hold These Truths" she returns to Chicago to accompany her mother who is visiting the hospital to be evaluated to see whether she qualifies for any clinical trials to treat her lymphoma. During the visit she reconnects with her father and Connor.
When her mother's health deteriorates, she attends her farewell party. She begs her father to allow her to go with them on their final vacation, but Daniel changes her mind, saying her mother wants her to remember her the way she is now: happy and beautiful, and surrounded by her friends and family.
- It is unknown what type of relationship she has with her half-sister and grandmother.
|Soul Care||Win Loss||Natural History||Brother's Keeper||Extreme Measures|
|Alternative Medicine||Inherent Bias||Free Will||Uncharted Territory||Heart Matters|
|Graveyard Shift||Mirror Mirror||Theseus' Ship||Cold Front||Lose Yourself|
|Prisoner's Dilemma||Monday Mourning||Lesson Learned||Ctrl Alt||Generation Gap|
|Deliver Us||White Butterflies||Love Hurts|
|Speak Your Truth||Nothing to Fear||Trust Your Gut||Naughty or Nice||Mountains and Molehills|
|Ties That Bind||Over Troubled Water||Lemons and Lemonade||On Shaky Ground||Down By Law|
|Folie à Deux||Born This Way||Best Laid Plans||Lock It Down||Devil in Disguise|
|An Inconvenient Truth||The Parent Trap||This Is Now||Crisis of Confidence||The Tipping Point|
|Be My Better Half||when to Let Go||Heavy Is the Head||Backed Against the Wall||What You Don't Know|
|Lesser of Two Evils||The Poison Inside Us||Play by My Rules||Death Do Us Part||All the Lonely People|
|Who Can You Trust||The Things We Do||Ghosts in the Attic||Can't Unring That Bell||We Hold These Truths|
|Old Flames, New Sparks||The Space Between Us||Tell Me the Truth||Never Let You Go||More Harm Than Good|
|Forever Hold Your Peace||With a Brave Heart|
|Never Going Back to Normal||We're Lost in the Dark||In the Valley of the Shadows||Infection, Part II||Got a Friend in Me|
|It's All in the Family||Who Knows What Tomorrow Brings||Too Close to the Sun||I Can’t Imagine the Future||Guess It Doesn't Matter Anymore|
|The Ground Shifts Beneath Us||Leave the Choice to Solomon||Pain Is for the Living||It May Not Be Forever||I Will Do No Harm|
|Who Should Be the Judge||The Ghosts of the Past||In the Name of Love||Just a River in Egypt||A Needle in the Heart|