The Mermaids (also known as Drowned Maidens,[1] Russian: Русалки ) is a 1871 oil on canvas by the Russian artist Ivan Kramskoi. It depicts nineteen rusalki, who, according to Slavic mythology, were river or lake spirits who appeared at night in the form of young women. Some versions of the myths describe them as spirits who had died unbaptised or unmarried, or had drowned themselves following an unrequited love. They would emerge from the water at night, to sing and dance. They fulfilled a similar folkloric role tosirens; often enchanting young men before luring them to their deaths at the bottom of the water.
one-hella-alchemist:

(x)  The Leshy or Lesovik is a male woodland spirit in Slavic mythology who protects wild animals and forests. There are also leshachikha/leszachka (wives of the leshak) and leshonky (children of the leszy). He is roughly analogous to the Woodwose of Western Europe and the Basajaun of the Basque Country.