This book explores the integration of narratology with posthumanism by examining a large scope of narratives in science fiction over nearly half a century in a range of major Anglophone countries. Based on the rhizome of posthumanism, analysis of the posthuman narrative embodiments in selected contemporary Anglophone science fiction, it investigates Ursula K. Le Guin's The Left Hand of Darkness (1969), Ian Watson's The Jonah Kit (1975), Iain Banks' The Bridge (1986) and Richard Powers' Galatea 2.2 (1995) as exemplifying various aspects of posthuman becoming-other. The book shows that, in the reactive logic of nihilism, the becoming-other posthuman, rather than posing a threat, proves to be the companion and savior of human beings, whose apocalyptic sacrifice brings back the all-too-human humanity to the chaotic world of presence.