"Sleepover" is the first segment of the twenty-second episode of Star vs. the Forces of Evil. It premiered on September 26, 2016 alongside "Gift of the Card", and is the first segment of the ninth episode in the second season.
Star hosts a sleepover with her girl classmates and Pony Head. They recruit Marco to play a truth or dare game called "Truth or Punishment", where the Truth or Punishment cube administers punishments to everyone when someone lies, and refuses to free everyone until the game is over. The cube's final question is who is their greatest crush. Marco admits he likes Jackie, but the cube gets angrier, insisting someone else is lying. Star confronts the cube and tells it that her preferences can change. The cube gets confused and lets them go.
- Eden Sher as Star Butterfly
- Abby Elliott as Janna Ordonia
- Adam McArthur as Marco Diaz
- Grey DeLisle as Jackie-Lynn Thomas
- Daron Nefcy as StarFan13
- Jenny Slate as Pony Head
- Marco reveals to Jackie Lynn Thomas that he has a crush on her.
- The end of the episode strongly hints that Star has a crush on Marco before the cube was crushed.
- October 20, 2016 (United Kingdom and Ireland)
- November 17, 2016 (Italy)
- January 12, 2017 (Poland)
- February 5, 2017 (Japan)
- March 7, 2017 (Latin America)
- April 14, 2017 (Southeast Asia)