Pinky Cyborg Who Is The Cyborg Cartoon Charactor That Is Just A Brain, I Think Floating In A Liquid?

Who is the cyborg cartoon charactor that is just a brain, i think floating in a liquid? - pinky cyborg

I have this memory of a character (part of my childhood at the time of the Teenage Mutant Ninja Turtles, and Darkwing Duck) which is not (only one brain, Pinky and the Brain), I think, in a display case in a liquid more than one type body. I mean, he is exposed in a laboratory with a large screen on the front of the room. I do not know whether he is a hero or a villain. Any help is greatly appreciated.