On top of that Cerberus also drops Smoldering Stone, which RS gold is made to enhance Dragon equipment into Infernal devices (Axe, Pickaxe and so on). Since the drops of the boss are extremely expensive , and also because it's easily accessible , it's a perfect place to start a farm for those who are more than 91 Slayer.
Thermonuclear Smoke Devil."Thermy" is Thermy is a Slayer boss who is an even tougher and bigger version of Smoke Devil that resides among his smaller brothers in the Smoke Devil Dungeon. He can only be attacked during a Smoke Devil job, which is why he is required to have a level 93 Slayer skill. The only monster to be attacked drop Smoke Battlestaff which is the most costly battlestaves. In addition, it has a slight chance of leaving Smoke Devil as a pet Smoke Devil.
Another bigger version of a regular monster is The Abyssal Sire which is the boss of Abyssal Demons. Players who have passed level 85 of the Slayer can face this monster on an Slayer task which is one-on-one. The easiest method to accomplish this feat is by making use to use Fairy Ring code D.I.P. Within Abyssal Nexus there are four rooms that can be combated, allowing many players to battle this cheap OSRS GP opponent simultaneously. The boss is well known to drop abyssal items, including Abyssal Whip and Abyssal Dagger that can be purchased for few millions in Grand Exchange.