Sergey Mikhailovich Belyaev (1883–1953) was a Russian Soviet writer. In the science-fiction novel «The Fighter 2Z» (first published in 1928 under the title «The Fighter 17Y», and in 1939 it was radically revised), Soviet scientists are set against a sinister inventor, Urlando—another would-be champion of world domination—using a similar discovery for peaceful purposes.