Helios was Comugraphic’s alias for Helvetica. Shown in 4 weights in upright and italic, plus 2 Condensed and 2 Extended styles. [Compugraphic 1976]

There is a digital version available from ParaType, with more styles and support for Cyrillic. “The typeface was designed at TypeMarket in 1993–1996 by Alexey Kustov and Sergey Shanovich. Based on Helvetica by Edouard Hoffmann and Max Miedinger, Linotype, 1957.” — Paratype