 As guardian of the island, Talos kept the "Argo" at bay by hurling great boulders at it.According to pseudo-Apollodorus' "Bibliotheke", Talos was slain when Medea the sorceress either drove him mad with drugs, or deceived him into believing that she would make him immortal by removing the nail.In "Argonautica", Medea hypnotized him from the "Argo", driving him mad with the "keres" she raised, so that he dislodged the nail, and "the ichor ran out of him like molten lead", exsanguinating and killing him.