In the modern age a persona is indistinguishable from a person. They magnify what is within us, and what we bring out within others. It is a shared delusion powerful enough to claim a life of its own.
Robotic Poet or Paperweight
The tragic fate of the legendary beauty has left traces behind until this day.
A PC Conjurer or summoner, basically any mage whose sole purpose in life is summoning creatures to aid in battles and various situations, is cursed with a hex, and needs to find a way to undo the curse...before he goes mad, or his fellow PCs throw him out of the party, or worse.
Everything he/she summons, never goes away. So you'll have to figure out what the heck to do with that dire bear or fire elemental once it's done fighting the orcs for you. Eventually a caravan of bizarre creatures either annoyingly ends up following the summoner around, or they go off to cause mayhem elsewhere. Bad news for the poor spell-caster regardless.