Vorago

Vorago is a new boss currently in development. It will feature a range of new boss-mechanics. As seen on the concept art, the monster will be very big, larger even than the corporeal beast. Mod Chris L also confirmed that currently Vorago will be a lot harder than Nex and strongest monster in RuneScape to date. It has been confirmed it's targeted at higher levelled groups and the drops will be obtained a bit differently than traditional fights where FFA groups will be a more interesting way to team up.

There won't be a killcount for this boss; however, there will be a mechanic you'll have to do in order to engage it.

It's also likely that the boss monster will be located in the Mysterious cave North of Falador, as a creature known as Scopulus (similar in shape to that of Vorago's) is found wandering outside the cave.

There is currently speculation among the community that Vorago will drop equipment, specifically shields, of even higher level than that of Player-Owned-Ports.

Also, this boss is a creation of the anima mundi, and as so will not be aligned with any god.