Software architect, programmer and sound artist Nick Rothwell, also known as CASSIEL, first collaborated with Wayne McGregor on the Choreographic Language Agent research project in 2013, contributing to the design and programming of 'Becoming', the interactive digital object ('11th dancer') used in the creation process for McGregor's Atomos. In 2017, Rothwell developed the choreographic tool used for Autobiography, an algorithm that determines the order in which sequences of the work are performed, based on McGregor's genetic code.