Stop hand

Click to help Cruella!
This scum Dr. Muraki Kazutaka
is driving Cruella insane!
So sayeth the great Lord of Darkness Sauron:
or he will send Darth Vader to terminate you.

Dr. Muraki

Dr. Muraki as he appears in the anime, revealing his mechanical right eye.

 Dr. Kazutaka Muraki is a villain in the anime series Descendants of Darkness.  Born on December 4, 1964, he looks young for his age. He is the last of a long line of doctors, and is highly respected by many, except by those who know, and have seen the real Muraki. The true nature of Kazutaka Muraki is quite horrifying; he is a brutal murderer, having killed Tsuzuki's partner,Hisoka Kurosaki, among others, and tends to think of human life as something that can simply be thrown away. Despite showing no sympathy for anyone or anything, he uninhibitedly lusts after the main protagonist of the series, Asato Tsuzuki. He is determined to win the hero over, and will go to all lengths to ensure that, including kidnapping and murdering, all just to force Tsuzuki to unwillingly go on a date with him.

To add to the other acts of extremeness he has committed, he, in the long run, is searching desperately for a way to bring his half-brother, Saki, back to life. This is why he keeps the decapitated head and spine of his half-brother in a container. He wishes to use a body that will live during the stages of bringing Saki back to life, and given the fact that for eight years Tsuzuki survived with no food or water and barely any sleep, it's easy to see why Muraki has targeted him. If he were to use Tsuzuki's body then the chances of bringing his brother back to life are much higher. Oh, and the reason he he hopes to one day bring Saki back to life is so that he can kill Saki with his own two hands.

His right eye is actually mechanical.

Dr. Muraki2

Dr.Muraki revealing his mechanical eye