Throughout the span of his career, Thirlwell has toyed with his own identity by releasing music in the guise of numerous alter egos. During the earliest phases of his recording, Thirlwell's "groups" were composed of a plethora of fictional characters: Foetus Under Glass supposedly consisted of Frank Want, Phillip Toss and two Brazilian statistics collectors; Scraping Foetus off the Wheel was claimed to be the work of Want and Clint Ruin. Furthering the confusion, Thirlwell adopted these personas outside of his own recordings; for example, Frank Want can be found on The The's "Soul Mining" and on releases by Orange Juice, with whom he appeared on Top of the Pops.