Autism continues to be regarded enigmatically; a community that is difficult to access due to perceived disruptions of interpersonal connectedness. Through detailed observations of two children participating in the Arts and Humanities Research Council funded project "Imagining Autism: Drama, Performance and Intermediality as Interventions for Autistic Spectrum Conditions" (2011-2014), we demonstrate how "intermediality" unlocked some of the many and various languages autistic children use, facilitating their self-awareness and agency. We argue for the centrality of creative "material" and intermediate languages, as a bridge between the lived experience of autism, cultures of neurodiversity and practices of education and care.