The pirate band Tor'thal was part of once worked for the Dark Jedi Thaum Rystra. However, Rystra captured Tor'thal and some of the other pirates and took them back to the Temple of Pain, a Sith Temple built inside an asteroid. Rystra practiced Sith alchemy on them and Tor'thal's lekku were altered to give them poison glands, that secreted Sith poison. This could be fired from stingers that were also attached to them.
The pirate band Tor'thal was part of once worked for the Dark Jedi Thaum Rystra. However, Rystra captured Tor'thal and some of the other pirates and took them back to the Temple of Pain, a Sith Temple built inside an asteroid. Rystra practiced Sith alchemy on them and Tor'thal's lekku were altered to give them poison glands, that secreted Sith poison. This could be fired from stingers that were also attached to them.