Harker of the Colosseum is a Split Personality
When first we meet the guy in the Colosseum, he tells us that Harker isn't running things anymore, but if her was there would be a good chance they would be raped. This man never tells his name, btw. Later, however, the Warden calls him "Harker" and he tries to correct he saying that Harker's not in charge, and tries to tell his name. Something tells me this used to be him, though.
- Ehh, it seems to me like Harker is dead and the Warden doesn't care who replaced him.