Váli (son of Odin)
In Norse mythology, Váli is a son of the god Odin and the giantess Rindr. He was birthed for the sole purpose of killing Höðr as revenge for Höðr's accidental murder of his twin brother, Baldr. He grew to full adulthood within one day of his birth, and slaughtered him with no regret, no heart, and no thought. Váli is fated to survive Ragnarök.