Source: Bestiary 4, pg(s). 157
Incutilises are intelligent, shell-bearing cephalopodic sea creatures with a penchant for taking over the bodies of the dead.
With its 5-pound shell, an incutilis weighs about 30 pounds. If stretched out, it measures four feet in length between the tips of its tentacles and shell.
Using its smaller tentacles to burrow into a helpless creature, an incutilis can fill its prey with toxins that place it under the cephalopod's control. This kills the host, resulting in a naturally animated corpse instead of a mystical undead creation; as such, killing an incutilis parasite releases the lifeless corpse.
Incutilises prefer the ocean's depths and feed on larger sea creatures in any state of life or death.
Many colonies of incutilises live in the Okaiyo Ocean. Their methods of hunting include stalking ships caught in storms waiting for sailors to fall overboard; if this takes too long, an incutilis will simply board the vessel and take whom it wants as food. Another cunning ploy is to lure sailors into the water to rescue a drowning person that turns out to be just a dead body animated by the creatures; once in the water the luckless rescuers are mobbed by waiting incutilises.