This monster has extremely high defence, medium strength, but low attack.
Players using Blood burst/barrage or other forms of magic should note that this monster does not have such high magical defence. If you are ranging or maging and using the lectern as a safespot, it is worth noting that immediately after The Everlasting dies players should run out of the safespot, and run back when the Untouchable spawns. This because the Untouchable upon spawning will neglect the safespot and attack the player. The player would be unable to pass through it and thus will have to receive avoidable and unnecessary damage.
After you killed The Inadequacy (first form), it transforms into The Everlasting (second form). Then, it transforms into The Untouchable (third form). After this monster is killed, it transforms into a level 108 The Illusive (fourth form).
This monster can also be fought in the Dominion Tower and has 10,000 Life points in there.