I have always been a fan of the Ninja Turtles, and for some time now I have been thinking on redesigning Krang.
Yes, up until now I haven't seen anybody model the poor villain. So, I went ahead and redesigned the guy. I went for a similar look from the cartoon, but in the cartoon he was a pink thing with no shape and tentacles. So, I said, to me, he was always a brain. And so, I went for that look. A pink brain with a face and tentacles.
Done in 3D Max, and later in Zbrush. Textured with photoshop. Voila! A new and improved version of Krang! Enjoy.