Illithid (monster attribute)
Illithid is a form of monster attribute or similar quality in some variants of NetHack that indicates when a monster is considered to be a mind flayer or of a similar nature.
Across the variants that it appears in, the illithid attribute generally determines which monsters can and cannot be affected by artifacts that target dragons in addition to any other variant-specific properties.
dNetHack
In dNetHack, notdNetHack and notnotdNetHack, mind flayers and illithids are defined by the pointer is_mind_flayer(ptr) in mondata.h.
Mind flayers in dNetHack consist of the following monsters:
- h mind flayer
- h master mind flayer
- h star spawn
- h Mad Grazi
- G parasitized android
- G parasitized gynoid
- w parasitic mind flayer
- w parasitic master mind flayer
- L alhoon
- U elder brain
- H Lugribossk
- . Maanzecorian
- & Great Cthulhu
notdNetHack
In notdNetHack (and notnotdNetHack), the Illithanachronounbinder is a role that is flavored as being a mind flayer of whatever starting race the player selects, possessing both the traits of that race and those of mind flayers—the role's rank title for experience levels 14-17 is "Mind Flayer".
notdNetHack and notnotdNetHack also add some other mind flayer monsters and relatives:
- w neothelid
- V villithid
- ; illithid larva
EvilHack
In EvilHack, illithid monsters are denoted with the MH_ILLITHID flag.
Illithid heroes can occasionally encounter peaceful mind flayers and master mind flayers, and some illithid player monsters will also generate as peaceful.
Illithids in EvilHack consist of the following monsters:
- h illithid
- h mind flayer
- h master mind flayer
- h alhoon
- w neothelid
- ; mind flayer larva
- h Dark One
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