Qwallo Mode, a Jedi Knight of the Duros species, was a member of the New Jedi Order in the era after the Second Galactic Civil War. It was assumed that he died while on a mission around 42 ABY. However, in 43.5 ABY, Luke Skywalker and Ben Skywalker encountered him alive during their travels to the Maw Cluster; they witnessed him surviving in the vacuum of space while wielding a rocket launcher.
Eventually, the Skywalkers located Mode at Sinkhole Station, which is a space station located within the Maw. Mode had transformed into a Mind Walker, an individual belonging to a group of Force-sensitive beings residing at Sinkhole Station. These beings were known for their unique ability to separate their consciousness from their physical forms, enabling them to journey within a Force realm called beyond shadows. The Skywalkers encountered him inside the station's meditation chamber, where he pleaded with them to allow him to find peace beyond shadows. They fulfilled his request, allowing him to die.