Changed

The changed and warrior changed are creatures in dNetHack normally encountered only on the Anachrononaut quest. They are humanoids that have been corrupted by exposure to the Far Realms of Insanity.

Every time a new monster or group of monsters is generated in this branch, there is a 1-in-7 chance that it will be some type of changed humanoid, with an additional 4-in-5 chance of a group of ordinary changed, and a 1-in-5 chance of a solitary warrior changed.

As a result, random monster generation on the quest has about an 11.4% probability of creating a group of changed, and about a 2.8% probability of creating a warrior changed.

Once a changed is dropped below 50% health, it will stop healing naturally and begin releasing small poison clouds while losing 1 HP per turn. When a changed dies, it produces a large stinking cloud.

Changed

h changed (No tile)
Difficulty	8
Attacks	Weapon 2d4 physical, Weapon 2d4 physical

h changed (No tile)
Difficulty	8
Attacks	Weapon 2d4 physical, Weapon 2d4 physical
Base level	5
Base experience	76
Speed	16
Base AC	0
Base MR	50
Alignment	0 (neutral)
Frequency (by normal means)	0 (Not randomly generated)
Genocidable	No
Weight	1500
Nutritional value	400
Size	medium
Resistances	sleep, poison
Resistances conveyed	cold
A changed: can swim. can survive underwater. is mindless. has a head, a couple of arms, and a torso. is poisonous to eat. does not eat. (*) is normally generated hostile. can follow you to other levels. can pick up weapons and food. has infravision. normally appears in large groups. may turn against you when tame. cannot be tamed.

Warrior changed

H warrior changed (No tile)
Difficulty	20
Attacks	Reach 4d8 physical, Reach 4d8 physical, Breath weapon 4d8 acid

H warrior changed (No tile)
Difficulty	20
Attacks	Reach 4d8 physical, Reach 4d8 physical, Breath weapon 4d8 acid
Base level	15
Base experience	472
Speed	16
Base AC	−10
Base MR	50
Alignment	0 (neutral)
Frequency (by normal means)	0 (Not randomly generated)
Genocidable	No
Weight	1500
Nutritional value	400
Size	medium
Resistances	sleep, poison
Resistances conveyed	cold
A warrior changed: can swim. can survive underwater. is mindless. has a head, a couple of arms, and a torso. is poisonous to eat. does not eat. (*) is normally generated hostile. can follow you to other levels. has infravision. may turn against you when tame. cannot be tamed.

Encyclopedia entry

Those Changed by the Far Realms of Insanity now find the
Prime Material plane inimical to their existence, and must
wear protective suits formed from the flesh of those still
native to our dying universe. Should the suit be breached,
the Changed within will slowly boil away in a cloud of
noxious fumes.