Czarno Sarce

Czarno Sarce was a Sith Marauder who fought under the name Darth Czarnel, and one of several students of Arbet Makt who fell to the dark side. Among his more notable accomplishments was the murder of Jedi Master Rennyri Bomban, a murder that was believed to have been ordered by Makt himself.

Behind the scenes
The name Czarno Sarce comes from "czrno srce", which means "black heart" in Serbian. Czarnel, meanwhile, comes from "charnel", which is the name for a storehouse for dead bodies.