It's different and interesting to see an agent who's a bit more antagonistic than usual. Lake seems like fun, too.

I look forward to learning more about Fix and The Carver. It looks like they each have 'issues' that will play well of each other in future stories.

One nitpick: Technically an organism is only a parasite if it benefits at the expense of the host, which doesn't seem like the case here. (Not really enough information to be certain) I believe the more correct term would by "symbiont" or "symbiotic organism."

I really liked it. It had good pacing and the scenes flowed nicely from one to another.

I was confused when Fix mentions his instincts from the years he spent in gangs, since I thought he didn't remember them. Does he still have the instincts and then someone has told him where they are from, or how does that work?

I was impressed with the conversation between Fix and the Marquis. It is rare to see a piece that really deals with how it feels for someone to learn that they are nothing more than a half-baked character from a discarded story, and your take on it was really touching.
And the whole 'Wait, I get paid? And get food?' made me smile. I know one of my agents, Mittens, had exactly the same reaction.

I found Carver genuinely creepy, especially when she started throwing blood around, because then it seemed like she knew Fix' weakness and was using it against him. I was relived when Fix called her on it and told her that it wasn't working and that he wasn't going anywhere. I imagine that they'll grow on each other.