Nemetrix Core

The Nemetrix... Unless you haven't seen Ben 10 Omniverse, it needs no introduction. If you haven't seen Ben 10 Omniverse, I suggest giving it a try. I understand it isn't for everyone, but there are some really cool episodes in there (personal favorite being "And then there was Ben").

I do not own Ben 10.

Also, check out InkTank's Ben 10 and Danny Phantom crossover series called 5 Years Later. You can find it on their website, and they talk about it sometimes on their YouTube channel.