In seeking what makes humans unique, we have paradoxically revealed a continuity with the nonhuman: indeed, we are made up of nearly 50% microbial cells. Vital for our metabolism, this microbiota also influences an unexpected part of us: our personality and our mood. Highlighting this multispecies’ nature of ours, this eleven-day time-lapse was created in a Petri dish using only photographic film and microorganisms. In a unique interspecies co-creation, these microorganisms interacted with the pigments in the film: by painting their presence on the portraits, they reshaped human boundaries to reveal our hybrid state, both human and microbial, macro and micro, individual and ecosystem.