future supp
*Notes post for potential future supplement*
It started when an alien device did what it did
And stuck itself upon his wrist with secrets that it hid
Now he's got super powers, he's no ordinary kid
He's Ben 10.
So if you see him you might be in for a big surprise,
He'll turn into an alien before your very eyes
He's slimy, freaky, fast and strong, he's every shape and size
He's Ben 10
Armed with powers, he's on the case
Fighting off evil from Earth or space
He'll never stop till he makes them pay
'Cause he's the baddest kid to ever save the day
Ben 10
Hmmm. I confess to find myself personally uninspired by the tidbits we know so far. I guess a monster-summoner type might be cool depending on how it was done, but... if there's going to be more magic using classes, I'd rather see something like Dragon Shamans or Warlocks, where the player is operating from a much smaller discrete list of abilities that they can pick and choose amongst and not have to worry about book-keeping.
Give me a monk type (unarmed combatant that is) that can actually shift pieces of themselves to manifest claws or poison stings or spiderclimb along and then leap down into the middle of a group of enemies and start kicking ass.
A martial arcane user that imbues their weapon with different elemental abilities and can tag other special effects onto it like knocking foes back, trapping them in place, having conditions put on them, and so on.
Even taking something like the shapeshifting stuff of the Druid and making a "Ben-10" sort of character where there's a fixed list of forms/shapes/creature that the class can take, and their class abilities are about improving aspects of their various forms or adding other cool tricks to their forms. No spellcasting or other stuff to worry about like the Druid has.
I guess my tastes are different from other folks though. *sigh*
*Notes post for potential future supplement*

It started when an alien device did what it did
And stuck itself upon his wrist with secrets that it hid
Now he's got super powers, he's no ordinary kid
He's Ben 10.
So if you see him you might be in for a big surprise,
He'll turn into an alien before your very eyes
He's slimy, freaky, fast and strong, he's every shape and size
He's Ben 10
Armed with powers, he's on the case
Fighting off evil from Earth or space
He'll never stop till he makes them pay
'Cause he's the baddest kid to ever save the day
Ben 10