Ben Tennyson/BTEF

Ben Tennyson is a main character in the series Ben 10: Eternal Forms.

History (Pre-BTEF)
See Ben Tennyson.

History (BTEF)
In order to cure Gwen of the insanity she absorbed from Kevin as well as the poison that was about to kill her, Ben had both transferred into his body by Verdona. It was her idea, and he agreed to save Gwen's life. The poison killed Ben before he could even go insane. But, Verdona was able to trap his consciousness before it left his body and move it into the Ultimatrix, which his spirit now inhabits. He no longer is able to access his human form.

In Nuclear Dropout, Ben drops out of high school in order to have more time to save the universe. He also gets a restraining order from the school after an incident with a bomb scare.

Powers and Abilities
Ben is now literally the Ultimatrix. He has no human form, as it was corrupted when he died. He simply switches from alien to alien in the same way he used to when he was transformed. He is still able to go Ultimate.

Sometimes, under circumstances that are not entirely clear as of yet, Ben will turn into a Charged Form. In Absolute Prison (Part 2), Verdona caused Ben to transform into Charged Heatblast with her mana manipulation abilities, though it was never specified how. Charged Forms appear to have mostly the same appearance and powers as their normal form, only augmented to some degree. Theoretically, Ben has a Charged Form for every alien on the Ultimatrix.

List of Shown Charged Forms

 * Charged Heatblast