One of these figures was 
One of these figures was once ambushed while bathing in the Puchai River, but was able to defend himself with a Greek hat. That figure later becomes stuck in the pools of blood left over from a three-day-long duel, but he uses a magic incantation and his spear to clear the blood away, allowing him to rescue Zabava. Another of these figures won a duel by praying for rain, which soaked the paper wings of his opponent, the dragon Tugarin. The best-known of these characters, who was unable to walk until age 33, defeated a wind demon known as (*) Nightingale the Robber while riding through the Black Mire and was given strength by the giant knight Sviatogor. They were depicted together in a famous painting by Viktor Vasnetsov, and they all served in the court of Vladimir the Fair Sun in Kiev. For 10 points, identify this group of Slavic folk heroes that included Dobrynya Nikitich, Alyosha Popovich, and Ilya Muromets.
One of these figures was once ambushed while bathing in the Puchai River, but was able to defend himself with a Greek hat.
{bogatyrs} [prompt on equivalents like “{Russian knights}-{errant}” or {whatever}]