When the Primarchs were first created within the gene-laboratories hidden beneath the Himalayan Mountains on Terra, though the machinations of the Chaos Gods the capsules of the nascent Primarch were scattered across the galaxy. The Promethean Opus (source of much Imperial knowledge of Vulkan) tells the tale of how one of these children ended up on the feudal Death World of Nocturne during one of its tumultuous periods known as the Time of Trial. Among the hardy and stoic people of Nocturne, the infant Vulkan had fallen like a blazing comet, and into the home of a "Black-Smiter", - a metal worker by the name N'bel, in the city-settlement of Hesiod - he had been taken as a foster child. N'bel, recognised the child as the one prophesied to be a saviour by the teachings of the Promethean Cult