The Mikron O'Jeneus incarnation of Gizmo first appeared in The New Teen Titans #3 (January 1981), and was created by George Pérez and Marv Wolfman.

[1] A bald dwarf who flies around on a jet pack, Gizmo is a genius inventor who can turn seemingly innocuous objects like vacuum cleaners into dangerous weapons.

Hoping to increase his wealth, Gizmo joins the Fearsome Five through an ad placed in the Underworld Star by Doctor Light.

In DC Special: Cyborg issue #5, a new Gizmo debuts who is the son of the first and is based on the Teen Titans animated series incarnation of the character.

Gizmo is capable of creating weaponry by transforming one machine into another, such as converting an ordinary vacuum cleaner into a tank.