All of Ben Tennyson's original alien transformations were cool, but some were much more useful than others, like Heatblast and Upgrade.

The new series takes place a few months after the final episode of Ben 10: Alien Force where Ben's original Omnitrix - a device which allows its owner to transform into various alien forms - is ...

Based on the original ... Ben 10. Ben becomes targeted by an evil Mechamorph Warrior, named "Retaliator," who mistakenly blames Ben for something he did not do and attempts to destroy all aliens.