Tavion

Tavion was Desann's apprectice who hated Jedi, especially Kyle Katarn. She took part in the attack on the Jedi Temple with Desann, the details are shaky but she somehow escaped with the Kothos Twins and a group of Reborn.

They formed a gang called the 'Disciples of Ragnos', and they started worshipping a Sith Lord called Marka Ragnos who died nearly five thousand years prior. They found a staff that belonged to him and started travelling round the Galaxy draining the Force energy from different places.

After the Kothos Twins were killed Tavion retreated to her base and started using the Force energy to resurrect Marka Ragnos.

Naturally this activity caught the attention of the Jedi and they sent Jedi Sentinels to investigate. Kyle Katarn and his students attacked Tavions base on Korriban with a group of other Jedi and managed to drive her away from the tomb. Markla Ragnos possessed her body but was defeated by an able student of Kyle's. With Tavion and Ragnos destroyed, everyone went home.