Byakhee (3pp)

Byakhee CR 6

This flying organism resembles an arthropod with a bloated abdomen. It has huge claws, wings, and an insectoid head.

XP 2,400
CE Large aberration
Init +9; Senses darkvision 60 ft., see in darkness; Perception +14


AC 19, touch 14, flat-footed 14 (+5 Dex, +5 natural, –1 size)
hp 68 (8d8+32)
Fort +6, Ref +7, Will +9
Defensive Abilities unknowable form; Immune cold, mind-affecting effects, sonic


Speed 20 ft., fly 40 ft. (average)
Melee bite +10 (1d8+4 plus grab), 2 claws +11 (1d6+4 plus grab)
Space 10 ft.; Reach 5 ft.
Special Attacks shriek, blood drain (1d2 Constitution)


Str 18, Dex 21, Con 19, Int 9, Wis 16, Cha 8
Base Atk +6; CMB +11; CMD 26
Feats Combat Reflexes, Improved Initiative, Weapon Finesse, Weapon Focus (claws)
Skills Fly +14, Knowledge (geography) +10, Perception +14
Languages Aklo
SQ no breath, starflight


Shriek (Su)

Three times a day as a full-round action that provokes attacks of opportunity, a byakhee may issue a horrific shriek from the depths of its body that penetrates both space and time. At the end of the byakhee’s turn, another byakhee appears in an adjacent square to the shrieking byakhee, called from another place and time in response to the shriek.

This is a summoning effect, and as such a byakhee conjured via a shriek cannot itself shriek to summon more of its kind. A byakhee called via this shriek remains for 24 hours or until the byakhee that shrieked for it is slain, whichever comes first.

Starflight (Su)

A byakhee can survive in the void of outer space. It flies through space at an incredible speed via an otherworldly organ known as a hune, located in its abdomen. Although exact travel times through space vary, a trip within a single solar system should take 3d20 hours, while a trip beyond should take 3d20 days (or more, at the GM’s discretion), provided the byakhee knows the way to its destination.

Unknowable Form (Ex)

The form of a byakhee cannot be wholly grasped by sane mortal eyes. A byakhee is considered to have concealment against any intelligent creature that is not an aberration or an outsider, and is not suffering from some form of insanity or confusion effect.


Environment any (outer space)
Organization solitary, pair, shriek (1 byakhee plus 3 summoned byakhee) or flight (3–12)
Treasure standard

A byakhee’s bloated abdomen contains the byakhee’s hune organ, which enables it to fly through space at faster-than-light speed. It also allows the creature to issue a shriek that reverberates across vast distances and even backward in time to arrange for allies to arrive almost instantly. Byahkee are commonly summoned to serve as spacefaring steeds for cults of Great Old Ones and Outer Gods.

In combat, a byakhee summons an ally and then relies on its claws and proboscis to drain blood from its foes. It cannot be injured by extreme cold or sonic attacks, and its wholly alien mind renders it immune to mind-affecting effects.

Section 15: Copyright Notice

Sandy Petersen’s Cthulhu Mythos, © 2017, Petersen Games; Authors: Sandy Petersen, Arthur Petersen, Ian Starcher.

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