Caizarlu Zerren is a silent investor in Saintly Haven of Respite who resides in its basement. He was a former member of the Magnimarian Scarzni gang known as the Gallowed during his youth. His dabbling in necromancy resulted in a ousting from the gang, but not before he stole an quantity of jewels and gemstones from them.
Finding himself transient for months, he eventually learned of a Varisian doctor Erin Habe who wished to build a Sanatorium, but lacked the funds to do so. Caizarlu invested his stolen fortune in the Sanatorium so he could continue his necromantic experiments in secret, with the Sanatorium providing him with a continuing supply of bodies.1