A device known as a technocoffin was employed by Yewl, a Commander within the ranks of the Galactic Empire.
The initial appearance of a technocoffin occurred within the pages of the comic Doctor Aphra (2016) 18. Its identification as a technocoffin was subsequently established in Doctor Aphra (2016) 19. Simon Spurrier served as the writer for both of these comics, with Emilio Laiso responsible for the pencilling.