Yamata no Orochi , or simply Orochi (大蛇), is a legendary eight-headed and eight-tailed Japanese dragon/serpent.
Susanoo slaying the Yamata no Orochi, woodblock print by Toyohara Chikanobu
Susanoo slaying Yamata no Orochi, woodblock print by Utagawa Kuniyoshi
Princess and dragon is an archetypical premise common to many legends, fairy tales, and chivalric romances. Northrop Frye identified it as a central form of the quest romance.
Ruggiero Rescuing Angelica, an illustration for Orlando Furioso by Gustave Doré
Russian civil war propaganda poster from 1919: White Russian knight is fighting the Red Russian dragon
Perseus Freeing Andromeda After Killing Cetus, 1st century AD fresco from the Casa Dei Dioscuri, Pompeii.