Darius Dun



Darius Dun is a recurring antagonist in the TV show; Teenage Mutant Ninja Turtles: Fast Forward. He's Cody Jones' uncle and the CEO of O'Neil Tech. He's also the one responsible for creating the Dark Turtles.

Conclusion
However, due to the TV show's cancelation, it's unknown what happened to Darius. It's possible that he got arrested for his crimes.