Lífthrasir is a figure from Norse mythology, specifically mentioned in the Völuspá, a poem in the Poetic Edda. He is known as one of the two humans who survive the cataclysmic events of Ragnarök, the end of the world in Norse belief. Along with his counterpart, Líf, they are said to repopulate the Earth after its destruction. The name "Lífthrasir" translates to "life-thruster," symbolizing his role in the continuation of life. After Ragnarök, he and Líf are believed to inhabit a new world, where they will thrive and restore humanity, representing hope and renewal in Norse cosmology.