Eugene "Flash" Thompson was a classmate of Peter Parker. Flash grew up in Forest Hills, Queens, New York. He lived only a few blocks from Peter's house. He lived with his father Harrison Thompson, a police officer in the New York Police Department, his mother Rosie Thompson and his little sister Jesse. Flash was physically abused by his alcoholic father, leading to Flash's own violent, bullying nature.
Flash graduated from high school and enrolled at Empire State University on an athletic scholarship, becoming once more a classmate to Peter Parker. Even though at first he continued his rivalry with Peter, turning his new classmates Harry Osborn and Gwen Stacy against him, eventually, they became close friends, also because Gwen befriended Peter and made the two bury the hatchet.
By the time Flash left college to join the army, he and Peter parted as friends. During his tour of duty, Flash lost his legs after saving his partner from enemy forces. Flash's sacrifice is enough to earn him a recommendation for the Medal of Honor. He returned to the United States and started dating Betty Brant. Flash went through the so-called "stages of grief" backwards, even so far as to use dangerous experimental procedures to regain his legs, but seemed to come to terms with his condition after bonding to the Venom symbiote.
Flash took up the mantle of "Agent Venom" and joined the Guardians of the Galaxy.