Ladon

Coiled around the tree of golden apples at the western edge of the world, Ladon was placed there by Hera to ensure that no one — not even the Hesperides nymphs themselves — could steal the fruit. For his eleventh labour, Heracles had to obtain these apples. In one version, he slew Ladon with arrows dipped in Hydra venom; in another, he sent Atlas to fetch the apples while he held up the sky. After Ladon's death, Hera placed him among the stars as the constellation Draco, where he coils eternally around the celestial pole. Some sources give him only one head but make him immortal and untiring.