Star Teens and Aliens

 is the fifteenth one-hour crossover special in a series of Star Teens: Power Hour specials that features characters from the original Ben 10 series.

Summary
While the Star Teens are having lunch at the world's largest McDonalds with their siblings Julie, Paul, Antonio, and Maya, Ben Tennyson, his grandfather Max, and his cousin Gwen in their RV get transported from their dimension to Orlando. When Vampira and Ben's enemy Vilgax kidnaps the Star Teens and take them to a dungeon in Arco Iris, it is up to Ben, Gwen, and the Little Star Kids to save them.

Characters

 * Ella
 * Inidra
 * Sandra
 * Felicia
 * Lisa
 * Tanya
 * Sheila
 * Queen Vampira
 * Julie (Ella's younger sister)
 * Paul (Sandra's younger brother)
 * Antonio and Maya (Tanya's younger siblings)
 * Young Ben Tennyson (and Wildmutt, Heatblast, XLR8, Grey Matter, Four Arms, Diamondhead, and Stinkfly)
 * Young Gwen Tennyson
 * Grandpa Max Tennyson
 * Vilgax

Voice Cast

 * Aimee Carrero - Tanya
 * Alana Ubach - Antonio
 * Ariel Winter - Julie
 * Cree Summer - Queen Vampira
 * Dee Bradley Baker - Wildmutt, Stinkfly, Four Arms
 * Grey Griffin - Sandra
 * James Kevin Ward - Diamondhead, XLR8
 * Kari Wahlgren - Ella
 * Kate Micucci - Inidra
 * Kath Soucie - Paul
 * Kimberly Brooks - Sheila
 * Meagan Smith - Young Gwen Tennyson
 * Nika Futterman - Maya
 * Paul Eiding - Grandpa Max Tennyson
 * Richard Steven Horvitz - Grey Matter
 * Steve Blum - Vilgax, Heatblast
 * Tara Strong - Felicia, Young Ben Tennyson
 * Vyvan Pham - Lisa

Trivia

 * The World's Largest McDonalds at International Drive is a real life place featured in this episode.
 * While Ben, Gwen, Julie, Paul, Antonio, and Maya are searching for the Star Teens through the Stench Swamp, Julie, Paul, Antonio, and Maya wear their Little Star Kids face masks and the Tennyson cousins wear child-size activated carbon surgical earloop masks due to a foul-smelling swamp.
 * Ella and the girls are being held captive, this time, all of them have their arms manacled and their faces overnose gagged with dark grey cloth.