Barry Allen: The Methodical Scientist. Long before he became the Flash, Barry Allen trained as a forensic scientist. His police training means he approaches super-crime as an investigator, not just a fighter, and his scientific approach allows him to come up with new and creative ways to use his speed. He discovered time travel, vibrating through objects, creating whirlwinds, and more in his time as the Flash. Barry is also a lifelong comic book fan, who maintains his collection with the same meticulous care that he uses in the crime lab.