Brock's medical information may be accessed from Doctor Preston's terminal in the Rivet City clinic: "Another day, another broken nose. Rare to see him as a patient, but at least the people he "refers" are still alive. Barely."
Brock seems to be a moral, up-standing guy. In non-player character conversation with Trinnie, Trinnie will hit on Brock to which he says that Trinne is "too young" and "too drunk". He further says that she should come back sober in order to see if she wants to "have this conversation again".