 The Ssi-Ruuk are a saurian race that invade from the Unknown Regions of the galaxy.This was around 4 ABY (After the Battle of Yavin), immediately following "Return of the Jedi", in the novel "The Truce at Bakura".Native to the planet Lwhekk, Ssi-Ruuk are warm-blooded, reptilian beings covered with scales of various colors.