Sheila's Onslaught

 is the sixteenth episode of the second season of Star Teens Unite!.

Summary
Sheila gets a hard time with a bully named Stella Damon who arrives to school on her motorcycle. Before they can have a grudge against each other, the Star Teens help Hercules stop a hydra, a Nemean lion, and a Erymanthian boar from causing trouble in Arco Iris.

Major Events

 * Sheila's problem with a school bully

Characters

 * Ella
 * Inidra
 * Sandra
 * Felicia
 * Lisa
 * Tanya
 * Sheila
 * Queen Vampira
 * Heather (Sheila's mother)
 * Stella Damon
 * Hercules
 * Hydra
 * Nemean Lion
 * Erythmanian Boar

Voice Cast

 * Aimee Carrero - Tanya
 * Cree Summer - Queen Vampira, Heather
 * Dee Bradley Baker - Hydra, Nemean Lion, Erythmanian Boar
 * David Kaufman - Hercules
 * Grey Griffin - Sandra, Stella Damon
 * Kari Wahlgren - Ella
 * Kate Micucci - Inidra
 * Kimberly Brooks - Sheila
 * Tara Strong - Felicia
 * Vyvan Pham - Lisa

Trivia

 * The B-story resembles that of Totally Spies' "Spy Gladiators".