Josmarin was a divining mage who sailed with the crew of The Redeemer; using his magical skills alongside a smokey sphere through which he predicted the weather. With this foreknowledge, he helped guide the ship away from storms.

One day, while his crew was sailing near Jaia, an eldritch being conjured a powerful storm that wrecked the Redeemer at the shores of the Grand Cleft. Those who survived seek shelter and survival in Dead Man's Grasp, an old ghost town near the coast.

Josmarin blames himself for the wreck and the deaths of his crew, and he seeks to protect them from whatever force wrecked them here.

He has been driven to madness by a group of cultists serving the eldritch being that attacked the ship. He previously was driven to believe that he was created by this cult as a clone of the real Josmarin, but this was proven wrong after a nearly fatal wound from a beholder destroyed his left arm. As it disintegrated, he saw that it did not contain the telltale gray flesh from the cult's creations.