Zagthean

Zagthean, also known as Zagthean the Broken, is a prominent Chaos Lord of the Black Legion of Chaos Space Marines who has dedicated himself to the service of Slaanesh.

History
On the Agri-world of Valesia, the Broken led his Black Legion warband in a conflict marked by fury and savage excess. For his own amusement, Zagthean constructed a great maze of thorns drawn from the world's famous rose orchards.

He then proceeded to blind his prisoners and set them loose within the maze's tunnels before proceeding to hunt them down himself. Countless innocent citizens of Valesia spent their final terrifying hours listening for the sounds of his pursuit, their flesh bleeding and torn from the dozens of cuts made by the thorns.

Soon after the 4th Black Crusade, Zagthean pillaged the world of Helosian in the Agripinaa Sector. He took the sisters of the Convent of Alabaster Maidens prisoner and exposed them to the energies of the Warp, which triggered their latent psychic potentials. Zagthean used Warp-derived technology to fuse the sisters into a single entity and then that abomination was transformed into a living portal into the Warp to unleash a daemonic invasion upon Helosian.

Zagthean was assigned as one of Abaddon the Despoiler's commanders during the 13th Black Crusade and has also become a model for the Slaanesh devotees among the special formation of the Black Legion known as the Children of Torment.