The Omnitrix was originally called "The Megawatt".
The Original Title of the show was "Ben to the Tenth".
Ben turned into Superheroes instead of aliens.
"And one of them was a girl!"
"Secret of the Omnitrix" is considered the end of the Ben 10 Series.
Cannonbolt was one of the Original 10 aliens in production, before being replaced by Diamondhead.
One of Ben's original aliens was a sonic screeching bird.
Originally, Gwen was not Ben's cousin, but a friend.
Originally, Grandpa Max was a scatterbrained inventor...
The Omnitrix reacts to how old you are...
...so if you're a 10 year old girl...
...you'll transform into a 10 year old girl alien.