<p>In this paper, we revisit the issues surrounding the lack of gender diversity in computing and build a theory on the roles and effects of genders in computing. Our intention is to transform human experiences with computing technologies to more equitably reflect and represent diversity. To support gender diversity in design, we work to create an integrated trans-feminist theory. In doing so we draw from diverse fields, including English, psychology, philosophy, cultural theory, law, medicine, and feminist, queer, disability, indigenous, post-colonial, Black, and Chicana studies. We show how and why marginalized people need to develop our own languages and voices as a step in empowering our identities. We assemble quantitative data showing the paucity of people with historically marginalized genders in computer science education and in our best papers. We use the participation gap in computing, combined with the mental health impact, to argue that computing, as a field, needs to critically examine our cis/heteronormative tendencies, which perpetuate a vicious cycle of erasure, and instead frame scholarship in terms of gender identities and presentations.</p>