This essay gives a situated introduction to body hacking, an underground surgical process that seeks to transform the body’s architecture, offering an ethnographic account of the affects that drive this corporeal intervention for performance artist Cheto Castellano, and later, for the author. A brief history of recent body modification movements is offered. Through these situated stories of corporeal transformation there is an exploration of Eva Hayward’s concept of transbecoming, exploring the perpetual change of the body in transition, particularly in (...) relation to posthumanistic transformations. The article closes with a speculative cyborg feminist body modification project titled 10,000 Generations Later, which explores how a subdermal archive of silicone implants stored under the author’s skin may assist her in a posthumanist transbecoming after the death of her companions species toy poodle Luk Kahlo, and perhaps even in a distant future. The author argues that this project becomes an apparatus of mestizaje between speculative cyborg feminism and significant otherness. (shrink)