Jim Barr, a chemist for the police, created a drug which gave him super strength and increased his intelligence, allowing him to create a gravity-regulating helmet. The helmet, as its name implies, allowed the wearer to defy gravity. He used his new powers and inventions to fight crime. He was partnered with his girlfriend, Bulletgirl. Later on, Jim devised a gravity collar that allows their dog, Slug, to become the flying, crime-fighting Bulletdog. He was a member of the Crime Crusaders Club, whose members included Captain Marvel Jr., Bulletgirl, and Minute-Man. His enemies included The Revenge Syndicate, The Bee, Blackmask, The Black Spider, The Bouncer, The Clinging Vine, The Dude, Dr. Destiny, Dr. Hood, Dr. Riddle, The Dome, The Engraver, The Fat Fiend, The Hunchback, the Invisible Man (Fawcett), The Limping Mummy, The Man Mountain, The Man of the Ages, Mr. Ego, Mr. Murder, The Mocker, The Prince of Evil, The Rat Catcher, Rednose, The Red Pirate, The Swing King, The Unholy Three, The Undertaker, The Voice, and the Weeper, among others. He had super strength, heightened intelligence, and telescopic vision, and his helmet allowed him to fly and deflect bullets.
Description Jim Barr, a chemist for the police, created a drug which gave him super strength and increased his intelligence, allowing him to create a gravity-regulating helmet. The helmet, as its name implies, allowed the wearer to defy gravity. He used his new powers and inventions to fight crime. He was partnered with his girlfriend, Bulletgirl. Later on, Jim devised a gravity collar that allows their dog, Slug, to become the flying, crime-fighting Bulletdog. He was a member of the Crime Crusaders Club, whose members included Captain Marvel Jr., Bulletgirl, and Minute-Man. His enemies included The Revenge Syndicate, The Bee, Blackmask, The Black Spider, The Bouncer, The Clinging Vine, The Dude, Dr. Destiny, Dr. Hood, Dr. Riddle, The Dome, The Engraver, The Fat Fiend, The Hunchback, the Invisible Man (Fawcett), The Limping Mummy, The Man Mountain, The Man of the Ages, Mr. Ego, Mr. Murder, The Mocker, The Prince of Evil, The Rat Catcher, Rednose, The Red Pirate, The Swing King, The Unholy Three, The Undertaker, The Voice, and the Weeper, among others. He had super strength, heightened intelligence, and telescopic vision, and his helmet allowed him to fly and deflect bullets.
