FX-8 droids were a model of droid that featured a body resembling a trunk. The cyborg known as Guswan Askreeth underwent a transformation where his body from the waist down was replaced with a uniquely modified, black FX-8 unit equipped with concealed casters.
The initial mention of FX-8 occurred in the 2017 publication titled Star Wars: The Last Jedi: The Visual Dictionary, authored by Pablo Hidalgo. Within Star Wars Legends lore, FX-8 droids were originally conceived for inclusion in the 2006 reference guide, The New Essential Guide to Droids, penned by Daniel Wallace.