An uchuulon, sometimes known as a slime chuul, was a chuul implanted with an illithid tadpole. They were used by illithids as hunters and guardians.[1]


Uchuulons resembled ordinary chuuls, except for their slimy and mucous carapaces and sluggish movements. They were physically weaker than chuuls, but continuously excreted a paralyzing mucus.[1]


When a chuul was implanted with an illithid tadpole, the resulting process was an incomplete form of ceremorphosis which invariably killed the tadpole, but that carried out a sufficient transformation on the host to render it more manageable to serve the mind flayers' purposes as lair guardians and hunters.[1]



  1. 1.0 1.1 1.2 1.3 1.4 1.5 Richard Baker, Joseph D. Carriker, Jr., Jennifer Clarke Wilkes (August 2005). Stormwrack. (Wizards of the Coast), pp. 163–164. ISBN 07-8692-873-5.