When the gang forgets to buy candy for the trick-or-treaters, they each take turns telling scary Halloween stories to make the kids forget about candy.
- Olivia Rodrigo as Paige Olvera
- Madison Hu as Frankie Wong
- DeVore Ledridge as Amelia Duckworth
- Ethan Wacker as Bernie Schotz
- Maxwell Simkins as Zane
- Elie Samouhi as Rodney
- Kevin Will as Coach Carlson
- Ross Kobelak as Horse Face Guy
- Declan Whaley as Trick-or-Treater
- This is the third Halloweenvark (Halloween themed) episode.
- The title has "Boo" in the title just like the Halloween episode of season 2.
- The title is play on Malibu.
- Willow was mentioned as boycotting Halloween for cruelty to pumpkins. However, vegetarians eat pumpkins and don't have a problem with it.
- Due to the episode being aired out of production order, Bernie's ankle is healed, but will still be broken when the season resumes.
- Elie Samhouhi celebrated his eleventh birthday during production of this episode.
- This episode has no cold opening, it starts directly with the theme song.
| To view the Halloweenvark Part 3: Mali-Boo! gallery, click here.
Community content is available under CC-BY-SA unless otherwise noted.