Designing for mixed-reality performances is challengingboth in terms of technology design, and in terms ofunderstanding the interplay between technology,narration, and (the outcomes of) audience interactions.This complexity also stems from the variety of roles inthe creative team often entailing technology designers,artists, directors, producers, set-designers andperformers. In this multidisciplinary, one-dayworkshop, we seek to bring together HCI scholars,designers, artists, and curators to explore the potentialprovided by Design Fiction as a method to generateideas for Mixed-Reality Performance (MRP) throughvarious archetypes including scripts, programs, andposters. By drawing attention to novel interactivetechnologies, such as bio-sensors and environmentalIoT, we seek to generate design fiction scenarioscapturing the aesthetic and interactive potential formixed-reality performances, as well as the challengesto gain access to audience members’ data – i.e.physiological states, daily routines, conversations, etc