Caliban

I know very little about this guy besides the fact that he works as a surgeon at a hospital for monster people (It's good to have 4 arms then!) and his voice is like a mix between this: https://www.youtube.com/watch?v=gwxuivP7JXQ&feature=youtu.be&t=128 and this https://www.youtube.com/watch?v=Vxq-zH6VgQ4&feature=youtu.be

The creepiness of the first video is perfect but the pitch in the second is better.

Despite his frightening appearance, he's a gentleman. Always well dressed, good posture and manners.
Might harvest someone's organs from time to time, but eh, details, am I right?