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.

Characters

 * Gwen Tennyson
 * Ben Tennyson
 * Kevin Levin
 * Max Tennyson