Prisoner Number 775 Is Missing

Prisoner #775 is Missing is the 32nd episode of Ben 10: Ultimate Alien and its the twelfth episode of the second season.

Plot
Max, Ben, Gwen and Kevin discover the hidden truth about Area 51.

Major Events

 * Ben first transforms into ChamAlien.

Ultimatrix Alien Debut

 * ChamAlien

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Kevin Levin
 * Max Tennyson
 * Cooper Daniels

Aliens Used

 * ChamAlienChamalien.jpg (first appearance)
 * Big Chill

Trivia

 * Area 51 was first mentioned by the Special Alien Capture Team back in the episode Framed.
 * Area 51 is present in the first Ben 10 game.