Canonbolt, Swampfire, Fourarms, Wildvine, XLAB, and those are the characters you can play as
ican
Actually, you can just enter Square, Square, Triangle, Circle, Square, X at the Cheat Menu in the Extras Menu to Unlock Diamondhead, for more cheats for Ben 10 Protector of Earth (e.g. how to unlock all locations on map, etc.) type CHEATS ON Ben 10 Protector of Earth and send it to CheatMaster101@gmail.com. For Exclusive Cheats for Ben 10 Protector of Earth (e.g. how to unlock Benwolf, etc.) type EXCLUSIVE CHEATS ON Ben 10 Protector of Earth and send it to CheatMaster101@gmail.com
yes
no you can't unlock other aliens
they unlock videos and artwork
you cant i did it but no there is no way to do it.
Unlock Alien Forms: Enter wildvine - 4arms - Heatblast - Wildvine
get all the sumo slamer cards
dont think you can
sorry but i don't think you can. Hope this helped
How can you play multiplayer on Ben 10 protector of earth for