The Age of Worms
Greyhawk wizard adventurer-turn-artist who sent the party a trapped painting that released two painted tentacled horrors in the common room of the Crooked House. He attempted to murder Endrik Archerus, Katarina Gertwright, and Belfor Vittanis in similar fashions, having Darius Finch deliver trapped paintings to them all. The party foiled most of his efforts (he did manage to kill Archerus’ manservant, Tharivol) before confronting him in his home and questioning him. They learned he was under the mind control of an illithid called Zyrxog, and they killed him, unable to permanently suppress the mind flayer’s control in any other way.