Loumara The loumaras are a relatively new demon ic race , much younger than the tanar ' ri . They are still centuries old , but this is still recent in a place like the Abyss , where time doesn ' t mean the same thing it does on the Material Plane . As a result , few loumaras have yet become powerful enough to be recognized as demon lord s ; Sifkhu , who has been captured by the succubus queen Malcanthet , is perhaps the only one . Loumaras are usually immaterial or invisible demons that are more like ghosts or undead than demons . Most of them possess living creatures or objects in order to more effectively work their evil . The loumara race resulted from the Abyss ' s attempts to digest the dreams and memories of a pantheon of dead gods . This pantheon , a territorial bunch , was killed eons ago by the Abyss itself , when Demogorgon baited them into destroying the layer of one of his rivals ; as the angry gods ripped an entire layer free from the Abyss , the Abyss lashed back , slaying them all so that only their thoughts remained . The " Demonomicon of Iggwilv " speculates that each breed of loumara evolved from the dreams of a different dead god , and that their natures are a corruption of that god ' s portfolio . The dybbuk is believed to have been born from the dreams or nightmares of a dead goddess of love and art , the guecubus from those of a god of law and peace , and the dreams of a goddess of nature and fertility formed the manitous . Types of loumara . Dybbuk . A Dybbuk resembles a jellyfish with a simply sketched human face . Dybbuks can possess and control dead bodies , so they spend a lot of time looking for a ' perfect ' host body to animate — one that died without violence or major injury , and preferably one that is handsome or beautiful . After taking the control of a ' perfect ' body , dybbuks try to insert themselves into the society of the victim , plunging into depravity and hedonism until their possessed body is broken down and ruined . When a ' perfect ' body is not available , a dybbuk will take a less desirable body and continue to search for a better host . Dybbuks are lonely creatures , and can be found in groups only where there are many corpses to possess , such as on a recent battlefield . They tend to avoid undead , because already - animated bodies are of no use to them . Guecubu . A Guecubu resembles a mass of vapor , and is born from dreamstuff tainted by evil . Guecubus can possess and control the body of sleeping humanoids . Once they are in control , they ' ride ' silently , letting their victim go about his or her business . At some point they take control and lash out , trying to spread death and murder — particularly the victim ' s family and friends . Sometimes the guecubu will conceal its actions even from the victim , letting them believe that they are cursed or jinxed . Guecubus believe that killings form some sort of pattern , and enough spilled blood will eventually reveal the meaning of creation in this pattern . They rarely form groups with other guecubus , preferring to remain hidden and anonymous . However , many of them can be found in the Dreaming Gulf ( 230th layer of the Abyss ) , where they are created spontaneously from the raw , churning chaos of dreams . Caligrosto . Sadistic even by the standards of the other fiendish races , Caligrostos live within weapons , having a particular affinity for slashing weapons such as swords . A Caligrosto ' s greatest desire is for the weapon it lives within to be carried into battle by an adventurer and allowed to inflict suffering ; it will often enhance the weapon with magic properties , so that adventurers will be more inclined to wield it . When a Caligrosto ' s weapon inflicts damage on an opponent , the Caligrosto may tear the weapon from its master ' s grip and manifest on the battlefield , taking the form of a shade and mimicking whatever creature the weapon struck most recently . It will then proceed to slaughter whatever it can find . Manitou . A manitou manifests , in its true form , as a tangle of ghostly vines , each tipped with a fanged maw . Manitous can possess any animal , plant , or fey . In their incorporeal form , they can literally tear apart the natural world with the invisible forces at their command .