I Wish I Were 13 Part 2

I Wish I Were 13 Part 2 is the second episode of the first season of Ben 10: Galaxies.

Plot
Ben, Gwen and Max find a city under a desert in America crawling with Petrosapians but an alien assassin named Bex is attacking the city.

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Max Tennyson
 * Tetrax
 * ''Crystal (Tetrax's dog) (cameo)
 * ''Pip (Petrosapian boy) (First Appearance)

Villains

 * Bex (First Appearance)

Aliens Used

 * Wildmutt
 * XLR8
 * Upgrade
 * Heatblast (cameo)
 * Cannonbolt (cameo)
 * Diamondhead (cameo)