Shelby: Sweet Mother of me!
Cyd: Mommy Fearest is Astrid!

Derby Little Secret is the fifth episode in season 2 of Best Friends Whenever and the twenty-third overall. It aired on July 29, 2016 to 1.26 million viewers.


When Cyd and Shelby go to a roller derby against Astrid’s wishes, they find out that Shelby’s mom has been keeping a secret.


Main Cast

Recurring Cast

Memorable Quotes



  • Astrid Marcus participates in female Roller Derby matches under the identity of "Mommy Fearest."
  • Daisy's royal gown has been cleaned since Princess Problems.
  • Shelby had a roller party for her ninth birthday, but dropped the activity as Cyd could never learn to skate.
  • Barry and Naldo have engaged in prank wars since the fifth grade.
  • The other Roller Derby participants were portrayed by members of the LA Derby Dolls.
  • Astrid places a large heart-shaped meatball in the center of her five-hour-lasagnas.
  • The Marcus family have a neighbor nicknamed "Paintball" Preston.
  • Daisy collected a hundred leeches from the Columbia River.
  • The subplot of Barry and Naldo wanting to be knights parallels the subplot of the Lab Rats episode Face Off, where Douglas and Leo compete to be Vice President of Donald Davenport's company. Just like in that episode, Barry and Naldo go through a series of elaborate, yet humiliating challenges to be knighted by Daisy, similar to how Donald puts Leo and Douglas through tests of similar nature. In addition, Daisy/Mr. Davenport reveals that the position Barry & Naldo/Leo & Douglas was seeking did not exist, and that the "tests" were all a prank to teach them a lesson.

International Premieres

  • December 10, 2016 (Hungary)
  • December 19, 2016 (Israel)
  • January 4, 2017 (Latin America, Brazil)


To view the Derby Little Secret gallery, click here.


Community content is available under CC-BY-SA unless otherwise noted.