The mythical creature known for its ability to regenerate its limbs in various stories is the Hydra. In Greek mythology, the Hydra is a serpent-like monster with multiple heads, and when one head is cut off, two more grow in its place. This regenerative ability symbolizes the challenges of confronting seemingly invincible foes. The hero Heracles (Hercules) famously battles the Hydra as one of his twelve labors, representing the struggle against chaos and the quest for heroism.