Roy Lincoln is a chemist who is assisting
his father develop a super explosive called
QRX-27. Wanting to steal the explosive,
foreign agents break into the Lincolns' lab
and kill Roy's father. Not wanting the bad
guys to steal the QRX-27, Roy swallows it!
Roy begins to fight the foreign agents, and
he soon notices that his hands are starting
to glow. It turns out that the QRX-27
concentrates its explosive powers in Roy's
hands, and by touching anything, Roy can
cause it to explode. Roy easily fights off his
father's killers, and he designs gloves
made out of fibro-wax that will contain his
power. Originally, the gloves were made of
asbestos, but that was changed to fibro-
wax later on when the health risks of
asbestos became known. Roy adds a full
body white suit and helmet to his costume
and dubs himself the Human Bomb.

. By removing his gloves and putting his hand on an object, Roy can make it explode. In
addition, Roy is immune to his own explosions and impacts caused by small size
projectiles such as bullets. Debuting in Police Comics #1, the Human Bomb picks up
four sidekicks. First is Hustace Throckmorton, who has explosive powers in his feet, and
second is a trio of young boys who call themselves the Bombadiers. By the time his
adventures come to an end in Police Comics #58, Roy has inexplicably turned in his
fibro-wax costume and replaced it with a standard green business suit, green fedora,
and leather gloves. The reason for this change, and an explanation for why his powers
didn't cause the leather gloves to blow up, has never been given.

The Human Bomb makes his first DC appearance in Justice League of America #107,
the story which introduces the traditional Freedom Fighters team. Roy's entire body, not
just his hands, becomes explosive in Freedom Fighters #1 due to his moving from Earth
X to Earth 1. Doll Man later developed a dampening system which allowed Roy to turn
his powers on and off. In the present day DCU, Roy Lincoln is retired and living on a
houseboat in Florida with fellow golden-ager Iron Munro.