Masked Girls Everywhere!

 is the tenth episode of the fourth season of Star Teens Unite!.

Summary
At home, Ella, her mother Trixie, her young sister Julie, and her friends, are wearing their masks, when the whole world is spread by mysterious deadly particles that everyone in schools and even Arco Iris are forced to wear masks to ward them off.

Major Events

 * Global pandemic in the world and Arco Iris

Characters

 * Ella
 * Inidra
 * Sandra
 * Felicia
 * Lisa
 * Tanya
 * Sheila
 * Julie (Ella's younger sister)
 * Trixie (Ella's mother)
 * Debbie (Inidra's mother)
 * Samantha (Sandra's mother)
 * Paul (Sandra's younger brother)
 * Judith (Felicia's mother)
 * Daphne (Lisa's mother)
 * Elena (Tanya's mother)
 * Antonio (Tanya's younger brother)
 * Maya (Tanya's younger sister)
 * Heather (Sheila's mother)
 * Ms. Diana Apple
 * Nurse Penny Harrison
 * Miss Addison
 * Veronica
 * Stinky
 * Eileen Kimball
 * Daisybelle and the fairies
 * Nemo
 * Queen Coral
 * Maris
 * Killer particles

Voice Cast

 * Aimee Carrero - Tanya
 * Alana Ubach - Antonio
 * Ariel Winter - Julie, Nemo, Fairy
 * Ava Acres - Fairy
 * Colleen O'Shaughnessey - Trixie
 * Cree Summer - Heather
 * Grey Griffin - Sandra, Samantha
 * Isabella Acres - Fairy
 * Jennifer Hale - Veronica
 * Jessie Flower - Maris
 * Jodi Benson - Queen Coral
 * Julie Nathanson - Miss Addison
 * June Angela - Daphne
 * Kari Wahlgren - Ella
 * Kate Micucci - Inidra
 * Kath Soucie - Debbie, Paul, Nurse Penny Harrison
 * Kimberly Brooks - Sheila
 * Madison Pettis - Daisybelle
 * Mae Whitman - Stinky
 * Maria Canals Barrera - Elena
 * Michaela Zee - Fairy
 * Nika Futterman - Maya
 * Tara Strong - Felicia, Judith
 * Veronica Taylor - Eileen Kimball
 * Vyvan Pham - Lisa

Trivia

 * Everyone in this episode, even in Arco Iris, are wearing face masks throughout---basically due to killer particles spreading!
 * But, then again, their face masks, even the ones worn by Nemo and the mermaids and Daisybelle and the fairies, are too sexy to take off. We always love their eyes, though...
 * Besides their masks the Star Teens, Star Moms, and Little Star Kids wear (along with Stinky and Veronica), the masks Penny Harrison, Diana Apple, and Miss Addison wear are blue surgical earloop face masks. In fact, every student in elementary, middle, and high schools wear surgical earloop face masks of all sizes. Kimball's mask is a white surgical earloop face mask.
 * Daisybelle and the fairies wear leaves over their faces as masks, while Nemo, her mother Coral, and her sisters wear starfish over their noses and mouths as masks.