Teenage Mutant Ninja Turtles, Season 4

Raphael:
How are we gonna take down the black-hole generator if its invulnerable to everything?

Fugitoid:
There is a way, but the entire Heart of Darkness must be destroyed. Not a single piece must remain.

April:
What's wrong, Professor? I can sense you wanna tell us something.

Fugitoid:
My friends, I must confess something to you. Something I couldn't reveal until you got to know we better as a humanoid, uh, android.

Casey:
What are you talking about, Fugi-dude?

Fugitoid:
You see, it was not the Kraang who invented the Black-Hole generator. It was...I who created it.

Raph, Mikey, Casey, and April:
What!?

Leonardo:
It can’t be!

Donatello:
No way!

Michelangelo:
It doesn't make sense!

Fugitoid:
I originally developed the black-hole generator as an energy source. But when Kraang Sub-Prime offered a huge price to buy it, I gave in. I was greedy. I didn't care what they wanted to use it for. It was all about money, all about financing my research. And then I realized what a terrible mistake I made. I mean, seriously, come on! They're the Kraang!