Escape Plan JGT-HB was a backup evacuation strategy developed by Cylo, the Galactic Empire's physician and turncoat. In the year 0 ABY, after the Imperial I-class Star Destroyer known as the Devastator located Cylo's fleet within the Crushank Nebulae, Cylo instructed Morit Astarte, a previous operative of the Empire, to get Escape Plan JGT-HB ready, but then he changed his mind and chose Escape Plan JGT-HB-4 as the preferred option.
The Star Wars: Darth Vader comic book series from 2015 alluded to Escape Plan JGT-HB in its twenty-first issue. Marvel Comics released the issue, penned by Kieron Gillen, on June 8, 2016.