control scum has over the beast
this too. ichi used "mafia beastman" as well.
The quote from me was immediately after hydrad said beastmaster and was on my mind. If you take any more of that quote you will realize I used monster every other time.
Really, I think using "beast master" as a specific terminology would come from someone making up a role, because "monster" is clearly the correct terminology for our enemies and "monster" [probably] would have been used in any official PM.
In any case, I seriously doubt such a role exists for a single scum because that just seems really weak and then also if that scum were to die then the mafia would now have 0 control over the monster and I just don't think that happens. I think it is probably just something scum make a collective decision about in their qt about who (and maybe even when) the monster will attack the following day.