The mythical hero known for performing twelve labors is Hercules, also known as Heracles in Greek mythology. He is famed for his incredible strength and adventures, which often involved overcoming seemingly insurmountable challenges. The twelve labors were a series of tasks assigned to him as a penance for killing his wife and children in a fit of madness induced by the goddess Hera. These tasks included slaying the Nemean Lion, capturing the Golden Hind of Artemis, and retrieving the Cerberus from the Underworld, among others. Hercules is a symbol of heroism and perseverance in mythological narratives.