The elemental monster class is represented by the symbol E and consists of five monster types:
- Four proper elementals:
- One additional monster type:
- E stalker
The stalker is quite unlike the others, and so the term “elemental” usually refers only to the four proper elementals.
Stalkers are genocidable but the proper elementals are not, so using a blessed genocide on the E class will only wipe out stalkers.
The air elemental is by far the fastest of elementals and, indeed, the fastest monster of any sort in the entire game. They appear both on the Plane of Air (guaranteed) and in the main dungeon (random). On the Plane of Air, they have a lot more hit points. Unlike other elementals, air elementals can engulf players. Their main attack is to pummel the player with debris; this can be quite deadly to unprepared characters due to their extreme speed and because, unlike against other whirly monsters, one cannot acquire a resistance against the physical damage. Air elementals are not genocidable. They are also immune to petrification and poison. They cannot deal much damage to players polymorphed into a huge monster, e.g. a titan.
In previous versions of NetHack, the air elemental's pummel attack dealt twice as much damage as currently; this was changed in version 3.4.0.
They make surprisingly bad fighter forms to polymorph into, though they are good for travel. E.g. hunting the vibrating square, or crossing the Plane of Air. They are less good for the Plane of Fire because a boulder-throwing, lava-splashing giant might rehumanize you right over lava, and outright bad for the Plane of Water where you cannot see the portal move. Once polymorphed, you cannot use your hands, including to put on or remove rings or operate a bag. Since they are blind, you might want to pack a wand of probing to make picked-up items seen, or wear the Eyes of the Overworld (if you have them).
Earth elementals are slow and thus easily dealt with, although you may find yourself overwhelmed by large numbers of them as they can phase through walls.
Fire elementals are not fast and not hard to fight, especially if you have fire resistance, in which case they can do you no damage.
Water elementals may be summoned by drinking from a sink and can easily kill an early character should they hit. Unlike the air elemental, water elementals are slow and easy to run away from.
Elementals are manifestations of the basic nature of the
universe. There are four known forms of elementals: air, fire,
water, and earth. Some mystics have postulated the necessity
for a fifth type, the spirit elemental, but none have ever
been encountered, at least on this plane of existence.
This page is based on a spoiler by J. Ali Harlow.