Who Are Those Masked Women?

 is the twelfth episode of the first season of Star Teens Unite!.

Summary
Vampira has kidnapped Ella, Inidra, Sandra, Felicia, Lisa, Tanya, and Sheila and replaced them with humanoid lizard monsters shapeshifting into Star Teens to raid villages in Arco Iris! Can Bella and Julie stop the shapeshifters and save the real Star Teens?

Characters

 * Ella
 * Inidra
 * Sandra
 * Felicia
 * Lisa
 * Tanya
 * Sheila
 * Bella
 * Queen Vampira
 * Mutant humanoid lizards
 * Trixie (Ella's mom)
 * Julie (Ella's younger sister)

Voice Cast

 * Aimee Carrero - Tanya
 * Ariel Winter - Julie
 * Colleen O'Shaughnessey - Trixie
 * Cree Summer - Queen Vampira
 * Grey Delisle - Sandra
 * Kari Wahlgren - Ella
 * Kate Micucci - Inidra
 * Kimberly Brooks - Sheila
 * Susanne Blakeslee - Bella
 * Tara Strong - Felicia
 * Vyvan Pham - Lisa

Trivia

 * This episode marks the first time any member of the Star Teens is being held prisoners. In fact, it has all the members tied up in rope and gagged over-nose with white cloth.