- Flesh Meets Steel (Unknown Date) - The Sensorians, a newly-formed warband of Heretic Astartes who serve the Dark Prince, treat with the Dark Mechanicum in an attempt to pioneer Daemon Engines equipped with suites of sonic weaponry. In doing so they learn of the sombre Skitarii of the Forge World Agripinaa, ancestral enemies of the Eye of Terror’s machine-hereteks. Appalled by the notion that the Skitarii voluntarily exchange their flesh for cybernetic replacements, the Emperor's Children stage a grand raid upon the planet under the cover of a Dark Mechanicum invasion. They capture several maniples of Skitarii, overloading their circuits with barrages of intense noise and deafening scrapcode, before bearing them back to the Eye of Terror. There they cut out the Skitarii’s bionics and replace them with fleshy equivalents taken from mutants, from corpses, even from fallen Chaos Spawn, until barely an ounce of metal is left. The Fleshlings of Sensoria, though driven mad by the process, prove a potent asset in the Long War.
The Sensorians' colours are not listed in current Imperial records, but like all servants of the Prince of Pleasure, they utilise garish, outlandish colours that are bright and stimulate the senses.
The Sensorians' badge is not listed in current Imperial records.
- Codex Heretic Astartes - Chaos Space Marines (8th Edition), pg. 48