The Flash is a superhero from DC Comics known for his incredible speed and ability to move at lightning-fast rates. He first appeared in 1940 and has since become a key member of the Justice League. The character is often depicted as a forensic scientist named Barry Allen, who gains super-speed powers after being struck by lightning. The Flash can run at superhuman speeds, allowing him to perform feats like time travel and quick healing. His main adversaries include Reverse-Flash and Zoom, who challenge him both physically and mentally. The character has been featured in various comic books, animated series, and live-action adaptations, including a popular television show.