Usain Bolt is a Jamaican sprinter who is widely regarded as the fastest person ever. He is the first man to hold both the 100 meters and 200 meters world records since fully automatic time measurements became mandatory in 1977. Bolt is also the only sprinter to win Olympic gold medals in the 100 meters, 200 meters, and 4x100 meters relay at three consecutive Olympic Games. He is also the world record holder in the 4x100 meters relay. Bolt is known for his lightning-fast speed and has been nicknamed 'The Lightning Bolt'.