Thidaxx also known as Tar monsters, were a species of cave-dwelling predatory creatures native to Taul. They had squirming tentacles and shark-like heads covered in eyes. At some point prior to the Battle of Takodana, a group of droids stranded on Taul were attacked by tar monsters. After ripping 2MED2 apart and destroying CO-34, the monsters snatched C-3PO's arm, attempting to drag him away too. However O-MR1 held onto his fellow droid, and thus the monsters were only able to rip C-3PO's arm off.
- Star Wars Special: C-3PO 1: The Phantom Limb (First appearance)
- (First identified as Tar monster)
- Star Wars: Absolutely Everything You Need to Know, Updated and Expanded (First identified as Thidaxx)