Rigglot is a super unique Fetish Shaman that is seen in Diablo Immortal.
Biography
Rigglot discovered how to gain power by feeding on the suffering of others. It hatched a plot to harvest pain. It sent fetishes to Cadeus's Hut to harass the healer and set the hut; with patients inside, on fire. An adventurer helped to put out the fire before it spread far.
Rigglot then sent more fetishes to ruin the healer's supplies to prevent the patients from being treated. After some time for the patients to stew in their pain, it attacked the hut to harvest their suffering.[1]
The adventurer returned to kill it. Unfortunately it was unable to defeat the adventurer, even after being empowered by pain.[1]
In-game
Rigglot is the boss of the side quest, No Pain. When empowered by pain, it gains a shield worth about two third of a health bar.