Couples Retreat

This is a ben 10 ultimate alien episode

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Kevin Levin
 * Julie

Villains

 * Elena Validus
 * Sunny
 * Albedo
 * Michael Morningstar/Darkstar

Trivia
Here is the comfirmation http://www.imdb.com/title/tt2065108/