Unnamed BTU Movie

Ben

 * Blitzwolfer (first reappearance)
 * Lodestar
 * Clockwork (2x)
 * Jetray (accidental transformation, selected alien was Clockwork)
 * Heatblast

Ben 23

 * Rainbow Rock (debut)
 * Muck Amuck
 * Windy Hindy

Gwen 10

 * Pyronite
 * Vladat

Ben 54

 * Crystalhead
 * Methaner
 * Quad Hands
 * Hydroshell
 * Ice Moth

Ben 10,000

 * Rocks
 * Squidstricter
 * Chimera

Bad Ben

 * Gutrot
 * Cannonbolt

Nega Ben

 * Astrodactyl
 * Lodestar
 * Kickin Hawk

Benzarro

 * XLRZarro
 * Vinezarro

Mad Ben

 * Whampire
 * Four Arms
 * Shocksquatch