Good Luck Charlie is an American sitcom that aired on Disney Channel from April 4, 2010, to February 16, 2014. The series' creators, Phil Baker and Drew Vaupen, wanted to create a program that would appeal to entire families, not just children. It focuses on the Duncan family of Denver as they adjust to the births of their fourth and fifth children, Charlotte "Charlie" and Toby. In each episode, Teddy Duncan adds to a video diary that contains advice for Charlie about their family and life as a teenager. Teddy tries to show Charlie what she might go through when she is older for future reference. Each video diary ends with Teddy saying the eponymous phrase, "Good luck, Charlie".

Bridgit Claire Mendler is an American actress, singer-songwriter, and business executive. She first became known as a child actress, with her early credits including the films Alice Upside Down (2007), The Clique (2008) and Labor Pains (2009). She signed with Disney Channel in 2009 and played Juliet van Heusen on Wizards of Waverly Place (2009–2012), Olivia White in the Disney Channel film Lemonade Mouth (2011), and Teddy Duncan on the Disney series Good Luck Charlie (2010–2014). She went on to portray Candace in the NBC sitcom Undateable (2015–2016), Ashley Willerman in the ABC/CMT musical television series Nashville (2017), and Emmy Quinn in the Netflix comedy series Merry Happy Whatever (2019).