The legendary beast often sought after by heroes for its valuable golden fleece is the Golden Fleece of the Chimera. This quest is central to the story of Jason and the Argonauts in Greek mythology. The golden fleece symbolizes wealth and valor, and its acquisition represents the ultimate achievement for heroes. The quest for the fleece embodies themes of adventure, heroism, and the pursuit of glory, illuminating the heroic ideals celebrated in ancient narratives.