Lethan Twi'leks were Twi'leks who had the rarest of all skin colors: red. It was caused by a mutation in their genetic code. Although it was said that only one in a million Twi'lek had red skin, there were many female Lethan Twi'leks on Naos III.
Taunt, Shakka, Alora, Kelad'den, Fa'ale Leh, Zhar Lestin, Yadira Ban, B'ink Utrila, Darth Atroxa and Darth Talon were Lethan Twi'leks. Senator Orn Free Taa also had one who acted as his consort and aide. B'ink Utrila, Yadira Ban and Zhar Lestin were all examples of Lethan Jedi, while Darth Talon and Darth Atroxa are examples of a Lethan Sith.
- Battle of the Sith Lords
- Star Wars: Episode I The Visual Dictionary
- Star Wars: Episode I Insider's Guide
- "Unknown Soldier: The Story of General Grievous" — Star Wars Insider 86
- Star Wars: Legacy (2006) 0
- The Unknown Regions
- Fly Casual