On December 10 of the same year, the second EP of "Polymer", "Demon", was released. It featured artwork by Becky Cloonan like Glutton. This 5-track EP focused on struggles with concepts like time and anxiety. According to the official description, "deals with the pressures and side-effects of anxiety, mortality and time-management over self-produced mid-tempo bounce tracks. "Demon" tackles an overwhelmed life a dazzling variety of tempos, flows genre-nods, such as the endurance-challenging title-track “Demon" in which Tonedeff attacks every 16th note for nearly 2 minutes straight in 6/8-time, tipping his hat at the trappings of modern Trap on "Use Me" and most notably, fans of Tonedeff's infamous triple-time flow will be delighted as Demon contains the long-awaited recorded version of "Crispy" where he essentially puts Fast Rap in a body-bag for everyone's benefit."