...it may be possible. It specifically mentions that you can "Find a Hippo", "Find a Dwarf" of "Find a Troll". This means that if you are successful (I assume) you will hear/see who is a Hippo, Dwarf, Troll.
But you're right I think. There's no need for Hypocopping, is there? You don't want to hide the real cop. Never mind. I'm just getting a bit annoyed with absolutely nothing happening here.
Let's just see what we hear and share it if at all possible.