The Dark Beast, a type of gundark, originated on Tython, the original home planet of the Jedi.
The Dark Beast was spotted only once, during the Cold War, in the caverns surrounding Vur Tepe on Tython. During this instance, it ambushed a Jedi Padawan who was in the process of choosing a lightsaber crystal from the crystals present within the cave. Ultimately, the Consular, accompanied by their ally Qyzen Fess, eliminated the beast while journeying through the cave towards the Forge, intending to construct their own lightsaber.