Gizmo is the name of two fictional characters appearing in American comic books published by DC Comics. The character was portrayed by Dov Tiefenbach in live action in season 3 of the HBO Max series Titans. Publication history The Mikron O'Jeneus version of Gizmo first appeared in The New Teen Titans #3 (January 1981) and was created by George Pérez and Marv Wolfman. Fictional character biography Mikron O'Jeneus 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. Gizmo created a corporation which supplied technology to various people, including criminals. Hoping to increase his wealth, Gizmo joined the Fearsome Five through an ad placed in the Underworld Star, a criminal underground newsletter, by the psychopathic criminal Doctor Light. After a number of unsuccessful conflicts with the Teen Titans (and Superman in The Adventures of Superman #430) Gizmo went straight for a while, and took a job at S.T.A.R. Labs, until his former Fearsome Five teammate Psimon, after having been seemingly killed by his teammates, resurfaced looking for revenge, and shrank Gizmo to microscopic size. Years later, Gizmo found a way to revert to his normal size, and took up a life of crime once again, partnering with his former teammate, Mammoth. In a storyline in Outsiders (vol. 3) #12–15 (July–October 2004), frequent Captain Marvel archenemy Doctor Sivana gathered Gizmo and the others, and put the team to work for him in a scheme to short sell LexCorp stock by having them steal its accounts from its corporate building in Metropolis, and then driving down the stock by killing all the people in the building, and destroying two other Lexcorp properties. At the latter of the two, a microchip processor factory of Lexcorp's subsidiary, Kellacor, the Five were confronted by the Outsiders. After escaping, the criminally unsophisticated Five urged Sivana to take Lexcorp's nuclear missile facility near Joshua Tree, California. When Sivana refused, Psimon asserted that they would take it anyway, and in response, Sivana killed Gizmo with a laser blast to the head, and severed relations with the remaining four, warning them that he would kill them if they ever crossed his path again. Sivana used the money he made from the scheme to purchase a tropical island off the coast of Thailand to use as his lair, and the remaining members of