Verti

A worshipper of Foolish in one of his underwater cities, Verti is a triton necromancer that experiments with life and death underwater. The existence of Drowned is credited to them, no matter their location in the Overworld.
Verti has long worshipped Foolish, and believes that by experimenting with life and death, they are becoming closer to their god. They believe that since their work is based underwater, it gives them an edge over other necromancers that worship Foolish.
Foolish doesn't support necromancers in any iteration, but that doesn't stop cults from popping up claiming his favor.