Revenant goblins are a type of revenant. They are the only revenant with multiple combat levels. Slain goblins, minions of Bandos, during the God Wars, they are more dangerous than their combat level suggests. Like all revenants, they can quickly recover lost health, can cure themselves of poison and can rapidly react to a player's protection prayers. They have a somewhat slow respawn rate, but not as slow as the Revenant vampyre.
The Forinthry Dungeon is a PVP-enabled area, meaning it is entirely possible for other players to attack you whilst fighting the revenants in the dungeon. Do not bring equipment that you are not willing to lose and do not initiate combat with any other players if you are there to kill revenants.
Revenant goblins used to have two different looks, they either had a helm or wore no helm at all. After an update, Revenant goblins were updated and have a much more similar resemblance to their God Wars counterparts.
While in the Forinthry Dungeon, Revenant goblins had the second slowest respawn rate out of all of the revenants, only the Revenant vampyre having the slowest spawn rate. This was changed in an hidden update, which slightly increased their respawn rate.