The Beast Within

The Beast Within is the seventy-third of Ben 10: Ultimate Alien.

Air Date
September 28, 2012

Plot
After being convicted for a deadly attack on Van Kleiss, Ben as Benwolf must escape Plumbers custody and track down the real assassin, while being both hunted and aided by various plumbers. It's up to Alan and Kai to help Ben clear his name and discover the truth.

Characters

 * Ben Tennyson (Main Character in this Episode)
 * Gwen Tennyson
 * Kevin Levin
 * Elena Validus
 * Julie Yamamoto
 * Ship
 * Alan Albright
 * Cooper Daniels
 * Helen Wheels
 * Manny Armstrong
 * Pierce
 * Mariella
 * Kai Green

Villains

 * Van Kleiss (deceased)
 * The Pack:
 * 1) Biowulf
 * 2) Skalamander

Aliens used

 * Benwolf (stuck)