I started playing this game about 2 months ago and I've only gotten around to killing the Mongrel, Kokatrice, Kauda, Karion, and the "Derk with help"

I've heard about the Rota, Penna, Quadra, and Pluma, and what they drop. But I've just heard about a boss called the Golden Entrita.

If you kill it does it give you a title, and what does it usually drop? I've also heard about the bosses in PI, and if you kill those do you get a title as well?