Jeff Walker — born in England in 1969 — is Carcass's singer and bassist, and the author of the textual and visual identity that made the band instantly recognisable. His most original contribution is in the lyrics. Instead of the generic horror vocabulary death metal used, Walker wrote from the terminology of medical pathology and anatomy — titles and lines built from words taken out of clinical dictionaries. The effect is peculiar: the violence of the texts comes from technical precision, not from exaggeration, and the clinical distance of the language produces a discomfort direct description would not reach. That combination founded goregrind. His voice follows the same logic: a harsh mid-range growl, articulated enough for the words to register — which matters when the text is the point. He came from Electro Hippies, a band of the British hardcore scene, and that punk origin explains part of Carcass's stance, which always kept an ironic distance from the solemnity of extreme metal. He crossed every phase of the group, from the practically inaudible debut to Heartwork (1993), and led the reunion from the 2000s, recording Surgical Steel (2013) and Torn Arteries (2021).

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