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 Ossus, which had been destroyed during the Great Sith War millennia before.
Rayce used a lightsaber, although he had only been partially trained in its use, and lost it when he escaped the Jedi Temple. He was also capable of using the Force to guide a blaster and vibroblade. Rayce taught his pupils how to use the Force to both hide from the Empire's Force-hunters and wield these same weapons. He showed the Agents of Ossus these various techniques he developed during his time on the streets of Coruscant and other planets. -Wookiepedia on Jin-Lo Rayce
