Jack Jameson, or JJ as he is called by his friends, was attending a demonstration of Project: Human Fly by his grandfather J. Jonah Jameson, C.E.O. of Jameson Communications (and publisher of the Daily Bugle). The goal of the project was the creation of a body armor that would grant wearer insect-like superpowers. The staff of the project included Dr. Marla Jameson (Jonah's wife), biophysicist Dr. Sonja Jade and Richie Robertson, grandson of the late Joseph "Robbie" Robertson. It was on this day that JJ first met Buzz Bannon, a former Navy SEAL and the person chosen to use the Human Fly armor. In the following time they became close friends, almost like brothers. Then one day, as JJ and Buzz were in the gym, they got a message that Buzz should attend a meeting on the Project: Human Fly, but it was a trap.
Dr. Sonja Jade turned out to be a traitor who was holding Marla and Jonah Jameson, and Buzz Bannon hostage. She was about to steal the project files and the armor itself. While her minions were going with Buzz to retrieve the armor, JJ and Richie Robertson learned of the situation and triggered the fire-alarm. Buzz used the distraction to overcome most of his adversaries, but during the fight he got a shot in the abdomen and Richie was beaten unconscious. Nevertheless, Buzz managed to knock down all the men and went for the armor, joined by JJ.
Suddenly, the Human Fly entered the scene, rescued the hostages before they could get shot and went after the villains, Dr. Jade was able to get away due to an explosion. Later on that evening Buzz Bannon's body was discovered in the lab. JJ had donned the armor, but couldn't tell his grandfather (who in a fit a rage, accused the wearer of the Human Fly armor of killing Bannon). Although hearing this from a nearby rooftop, JJ knew that the body armor was his only chance at revenge for Buzz Bannon's death. He couldn't tell his grandfather anything about this and so kept it a secret. In memory of his friend he decided to call himself The Buzz.
Later JJ was joined by Richie who knew he was The Buzz because he regained consciousness on that day and followed them to the lab where from a distance he saw Buzz Bannon die. Richie agreed to help JJ with the armor, operating from a van equipped with a lot of electronics. They stay in contact via radio signal. With Ritchies help, The Buzz was able to find and defeat Jade.
The Buzz soon encountered Spider-Girl (who, unknown to JJ, discovered his real identity), and despite his good intentions, she was leery of him, since she had been reading articles in the Daily Bugle (written by Jonah Jameseon) that Buzz was a murderer (ironically, the same kind of articles he used to write about her father, Spider-Man). Buzz however was able to win her over, and even helped her form a new team of New Warriors, (including Ladyhawk, the Raptor, Darkdevil, and Phil Urich (the good Green Goblin).
After Lady Octopus kidnapped his parents and forced his father to turn into Man-Wolf and letting him loose, Jack was aided by Spider-Girl in defeating the two and together they restored John to his former self. The Buzz, attempting to discover the identity of Spider-Girl, erroneously concluded she was a police officer after being tricked by the webhead. Recently, he was attacked by the Hobgoblin but thanks to his suit he suffered minor damage. Later, he and members of the New Warriors were drawn into a battle alongside Spider-Girl and American Dream against the Hobgoblin, the Punisher and crimeboss Silverback, during which Jack suffered damage to his battle suit once again.