The legendary creature central to the tales of Arthurian legend is the dragon, particularly exemplified by the dragon slain by King Arthur or the magical creatures found throughout the stories. The dragon represents chaos and the challenges that heroes must face. Additionally, other creatures, like the unicorn, symbolize purity and innocence, adding depth to the mythic landscape. These creatures embody the various moral and ethical struggles faced by the knights, reflecting the timeless battle between good and evil, as well as the virtues associated with knighthood.