I have quite a few roosters and have not had a problem with them bloodying the hens... In fact when a roo goes for another roos hen, they chase them away before anything happens. I have a very happy flock even having a large number of roos.
Your black roo looks like a cross between a buttercup and an americana, and if that is the case, it would explain where the gray/blue/black legs are coming from. Maybe passed down from grandparent stock?