Desvin Tor'thal, a pirate of the Twi'lek species, existed in the era of the Galactic Civil War.
Tor'thal was at one time a member of a pirate group that served the Dark Jedi known as Thaum Rystra. But, Rystra eventually seized Tor'thal, along with several other pirates, and transported them to the Temple of Pain. This Sith Temple was constructed within a asteroid. Rystra then subjected them to Sith alchemy, which resulted in Tor'thal's lekku being modified to produce poison glands. These glands produced Sith poison. In addition, stingers were connected to the lekku, allowing the poison to be projected.