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Halley Wolowitz is the daughter of Howard Wolowitz and Bernadette Rostenkowski-Wolowitz, and the older sister of Neil Michael Wolowitz.

In "The Valentino Submergence", Howard and Bernie nurse a rabbit back to health that almost drowned in their hot tub looking very parental while doing it. After Howard heads to the emergency room, Bernadette tells the rabbit that she'll have to find another time to tell Howard that she is pregnant. The rabbit didn't die, but that is also a cliché for being pregnant.


Bernadette with Valentino in "The Valentino Submergence", telling him that they'll find another time to tell Howard she's pregnant.

In "The Positive Negative Reaction", she tells Howard the news by making him read the notes around the kitchen, Howard is at first freaked out at the responsibility of raising a child and then embraces the future as much as Bernie does. It was also revealed that Halley was conceived on Sheldon's bed, which Sheldon is not happy about.

In "The Fetal Kick Catalyst", the baby kicks and this prompts Howard to go on a shopping spree.

In "The Brain Bowl Incubation", Bernadette and Sheldon get into an argument when he compares the neural cell network that he created with Amy to Bernie's developing baby.

In "The Property Division Collision", Bernadette's starts to feel contractions as she goes into labor.

In "The Birthday Synchronicity", Bernadette gives birth (on Amy's birthday) and Howard announces that she had a girl. The baby is named Halley after Halley's Comet. Her cry sounds like Mrs. Wolowitz screaming.

In "The Holiday Summation", Halley is crying constantly and Bernadette doesn't know how to deal with it. She gets more upset when Stuart gets her to stop very quickly. She finally solves the problem by crawling into Halley's crib and holding her while she sleeps.


Bernadette in the crib with Halley.


Halley visits apartment 4A.

In "The Romance Recalibration", Howard comes up with an over-complicated path to Halley's crib to avoid the squeaky floor board that was waking her up. He also hopes that she never has sex in her room like he did.

In "The Recollection Dissipation", Halley starts day care.

In "The Proton Regeneration", she says her first word to Penny, calling her "Mama". This shocks her parents (who overhear on a baby monitor) and makes Penny gleeful at having something to rub into their faces.

In “The Celebration Reverberation”, Howard gets Rajesh Koothrappali to plan a first-birthday party overnight which no one attends. Howard hasn't been going to the "Daddy and Me" classes and Bernadette's sister's kids are sick. Also her mother is stuck in bedrest waiting for the birth of Halley's brother. That night all the gang comes to celebrate while Sheldon and Amy use the kids' bounce house prior to their annual coitus in Howard and Bernadette's room as revenge for having coitus in their room.

In "The Matrimonial Metric", she was picked as the flower girl for Sheldon and Amy's Wedding.

In "The Solo Oscillation", Bernadette throws Howard's band out of the house so that Halley will sleep.

In "The Neonatal Nomenclature", her younger brother Neil was born.

In "The Athenaeum Allocation" both Howard and Bernadette express their wishes to stay home with the kids, but they decide that they don't want to leave their jobs and find it too tiring.

In "The Sibling Realignment", both the kids have pinkeye and give it to Howard, Bernadette, Raj, and Amy a week before Sheldon and Amy's Wedding.

Halley was heard and mentioned in "The Imitation Perturbation", when it was revealed that Sheldon said she resembled Winston Churchill.

In "The Conference Valuation", Leonard spends the weekend at Wolowitz's playing board games and conducting development tests on Howard's kids. Leonard has deja vu because he sees that Sheldon treats the kids the same way Beverly treated him, testing him all the time. Amy also plots to get Sheldon interested into having children.

In "The Laureate Accumulation", Halley is afraid of the dark so Howard tells her how he was afraid while on the International Space Station. Bernadette hears the tale and she, and Stuart doing the illustrations, write a book entitled “The Frightened Little Astronaut.” Howard doesn't want the world to know about his experience, especially after a publisher is interested in the book.

In "The Stockholm Syndrome", Halley finally appears onscreen, along with Neil, for the only time. While under Stuart's care, her brother comes down with a fever. While trying to help him feel better, she rolls down the stairs and loses a tooth. Stuart asks her parents for the spaghetti straightener's location. Earlier in the episode, Howard mentions he and Bernadette are terrified for her and Neil's safety, to which Sheldon selfishly tells Howard this is his big day and calm down, leading Howard to decide on going home til he ultimately stays for Sheldon's Nobel Prize ceremony.


  • She is named after Halley's Comet.
  • Her godfather is Rajesh Koothrappali.
  • She is the only member of the Wolowitz family (including her paternal grandmother) whose middle name is never revealed.
  • She has the same birthday as Amy, but in different years.
    • Halley was born in December, but Bernadette revealed she was pregnant with her in February, which would have meant she was conceived in January of that year, meaning Bernadette would have been pregnant with her for nearly one year.
  • Until the series finale, Halley was never actually seen on camera. This is intentional, as Halley is meant to be a tribute to Howard's mother, who was known for never appearing in person but making her presence known by her loud, shrill voice. Her voice actor passed away on November 11, 2014, and her character did as well in "The Comic Book Store Regeneration". Halley is similar to her grandmother as she did not appear physically for most of the series, and makes her presence known by her crying, which resembles Mrs. Wolowitz's voice.
  • Sheldon doesn't want to touch her.
  • She became a big sister with the birth of her brother Neil in "The Neonatal Nomenclature".
  • Her first word is "Mama", but she said it to Penny, not to Bernadette.
  • She now shares a room with her younger brother.
  • She was to be the flower girl at Sheldon and Amy's Wedding, but didn't appear.
  • She only appears onscreen in the series finale "The Stockholm Syndrome", played by child actress Sailah Nicol.
    • Also in this episode, Howard reveals that she is potty-trained.
    • Halley, her brother Neil, and Bert Kibbler are the only recurring characters who appear in the series finale.



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v · e · d
Characters Main Leonard Hofstadter  ‧  Sheldon Cooper  ‧  Penny Hofstadter  ‧  Howard Wolowitz  ‧  Rajesh Koothrappali  ‧  Amy Farrah Fowler  ‧  Bernadette Rostenkowski-Wolowitz  ‧  Stuart Bloom  ‧ The Social Group  ‧ Emily Sweeney  ‧  Leslie Winkle
Recurring and Minor Debbie Wolowitz  ‧  Barry Kripke  ‧  Priya Koothrappali  ‧  Dr. V. M. Koothrappali  ‧  Mrs. Koothrappali  ‧  Stephanie Barnett  ‧  Lucy  ‧  Mary Cooper  ‧  Zack Johnson  ‧  Beverly Hofstadter  ‧  Mike Rostenkowski  ‧  Alex Jensen  ‧  Professor Proton  ‧  Missy Cooper  ‧  Ramona Nowitzki  ‧  Dan  ‧  Josh Wolowitz  ‧  Dennis Kim  ‧  Althea Davis  ‧  Jeanie  ‧  Cinnamon  ‧  Mrs. Rostenkowski  ‧  Wyatt  ‧  Claire  ‧  Kurt  ‧  Eric Gablehauser  ‧  Dave Gibbs  ‧  Dimitri  ‧  Alfred Hofstadter   ‧  Meemaw  ‧  Jimmy Speckerman  ‧  Susan  ‧  Randall  ‧  Bert Kibbler  ‧  President Siebert  ‧  Janine Davis  ‧  Richard Williams  ‧  Halley Wolowitz  ‧  Neil Michael Wolowitz  ‧  Denise  ‧  George Cooper Jr.   ‧  Larry Fowler  ‧  Anu  ‧  George Cooper Sr.  ‧  Marissa