Yifaii, a member of the Ssi-ruu race, took part in his species' expeditions into the galaxy. These missions were focused on acquiring individuals for the entechment procedure. In this period, he held the position of Entechment Chief, with Firwirrung acting as his subordinate. This particular group of ships carried out an assault on the world of G'rho, resulting in the capture of Dev Sibwarra. The youngling avoided entechment, and Unit Commander Th'twirirl handed the Human infant over to Firwirrung.