Forge Guardian

During the Cold War between the Republic and the reconstituted Sith Empire, a jurgoran inhabited a canyon on the Deep Core world of Tython. A green-and yellow-skinned animal with beady black eyes, the jurgoran was known as the Forge Guardian by the planet's inhabitants, the Jedi Order. The Guardian was larger than typical jurgorans, and lived in a cave underneath the rock bridge that spanned the chasm.

In 3643 BBY, the Guardian was disturbed from its slumber when the Padawan of Jedi Master Orgus Din opened the Forge, an ancient machine used to create lightsabers, above the beast's cave, and the angry beast attacked the young Jedi. The Padawan, who had just defeated the Dark Jedi Bengel Morr and rescued Master Din, was forced to kill the Guardian with the Jedi's new lightsaber in order to safely return to the Jedi Temple.

Text and facts from the “Forge Guardian” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.