Jin-Lo Rayce was a Human male Jedi Padawan apprenticed to the Jedi librarian Jocasta Nu during the Clone Wars. At the conclusion of the war and the beginning of the Great Jedi Purge, Rayce escaped the attack on the Jedi Temple led by the Dark Lord Darth Vader. Rayce then evaded the new Galactic Empire's forces on Coruscant for a few months and eventually stowed away on a transport headed for the planet Chandrila, where he lived for a time. He then traveled to various planets in the Core, the Inner Rim, and the Mid Rim, in search of surviving Jedi. After concluding that the Jedi were gone, Rayce traveled back to worlds where various Force-sensitives he had met lived and began establishing cells of Force adepts. Rayce styled his group the Agents of Ossus, in memory of the Jedi library planet