Katy Cooper
Adventures in Babysitting Publicity Photos 4
Biographical information
Full Name
Katy Riley Gilda Astrid Sunny Blair Luan Cooper
Katy (by everyone)
2009 (age 7)
Resides In
Highland Park, Los Angeles
Cooper Household
Physical Description
Hair Color
Eye Color
Personal Information
Barry Cooper (father)
Donna Cooper (mother)
Emily Cooper (sister) Rooney Cooper (little sister, deceased)
Give Makeovers
Mom's Earrings
Bobby Anderson (possibly)
Her unborn sister, Rooney, passing away before the events of the movie
Production Information
First Appearance
Portrayed By
What did you expect me to wear? Pearls?
—Katy to Jenny

Katy Riley Gilda Astrid Sunny Blair Luan Cooper is one of the main characters in Adventures in Babysitting. She is a sweet, pretty 7 year old girl and is in love with fashion! She has a sister named Emily and an unborn baby sister named Rooney who died eight weeks before the events of the movie.

She is portrayed by Mallory James Mahoney.



Very into pink, fashion, and makeovers, Katy is the ultimate mini-Barbie. She loves anything fancy, and adores her mother's diamond earrings. She is also very kind, caring, and sympathetic.


Her hair color is blonde, unlike her sister and Mom's hair color, which is black. As you all know, she wears a light pink coat, a pink sling bag, a pink dress, either white stockings or white tights, and pink Mary Janes.



Emily Cooper

(Older Sister)

Emily is Katy's older sister. They have a good relationship, but there is a little bit of drama as Katy can tattletale on her most of the time. Some of the things that Katy would tattletale would be when Emily was about to shave her head. But overall, they have a good relationship.

Donna Cooper


Donna is Katy's mother. Evidently she also thinks she can give her mother fashion tips. Donna's best friend is Helen (Trey's mother).

Rooney Cooper

(Unborn Baby Sister)

In 2012, Katy and Emily were going to be big sisters but at Donna's ultrasound, it showed Donna had a miscarriage with Rooney before the events of Adventures In Babysitting. In a deleted scene, Lola, Jenny, Trey, Bobby, AJ, Emily, Zac, and Katy visit the cemetery where Rooney was buried. They all bow their heads in a silent prayer but Kat says hers aloud asking God to take care of Rooney.

Barry Cooper


Barry is Katy and Emily's father.


Jenny Parker


Jenny is Katy's babysitter. Jenny and Katy seem to get along well, and form a friendship throughout the movie. When Jenny was distressed, Katy comforted her. When Jenny needed a makeover, Katy voluntarily did it, much to her liking. Jenny comforted Katy in a delete scene that showed Katy's baby sister, Rooney's funeral.

Lola Perez


Lola is Katy's friend. During her trip to the city, Katy recommended a manicure. Throughout the movie, they formed a friendship. When Lola was bailed from jail by Officer James, Katy seemed happy and relieved that Lola was okay. She also gave Lola a makeover to disguise her as an apparent heiress so she can "borrow" the $100 in order to bail the SUV out from the Towing. Lola did care about Katy's baby sister, Rooney who died eight weeks before the film.

AJ Anderson

This information is currently unknown

Bobby Anderson

This information is currently unknown

Trey Anderson

This information is currently unknown


Finally, my people.
It's Friday Night, what do you except me to wear pearls?
—Katy to Jenny
You know, a professional manager can do wonders to your hands?
—Katy to Lola


  • Katy is a Cooper.
  • Katy is the youngest child in the Cooper family
  • She loves her babysitter Jenny.
  • She's adorable.
  • She loves jewelry.
  • She is 7 years old.
  • She misses Rooney.


The image gallery for Katy Cooper may be viewed here.

Main Characters
Jenny ParkerLola PerezEmily CooperKaty CooperTrey AndersonBobby AndersonAJ AndersonZac ChaseHelen AndersonDonna CooperTinyThe ScalperOfficer JamesBarry CooperHal Anderson
Recurring Characters
Leon VasquezDouglasDominique CassidyOfficer FitzJailer Swift-SirenBelleDead ManFemale OfficerPolice OfficerCop #1Cop #2DJ ChillBig PinkPlanetarium GuardHead ChefPastry ChefParty HostessCoat Check GirlStaff GirlStaff BoyMCCarlTinoTrentSamanthaRosarioImaniConcert Guard #1DancerArt StudentGala Event AttendeePedestrian