Infinity, Inc. was a group of young meta-teens assembled by Lex Luthor in an attempt to supplant the Outsiders and the Justice League. After Luthor's involvement was exposed, the group was sent to Markovia to serve King Brion. Rebranded as the  Infinitors, the team now works to protect meta-humans. Unbeknownst to Brion, Zviad Baazovi influences the group to his and the Light's ends.
Lex Luthor's multiple failed attacks on the Outsiders resulted in an increase in their popularity, G. Gordon Godfrey advised Lex Luthor to take a different approach against them. Lex created Infinity, Inc to outshine the Outsiders and eventually supplant them and the  Justice League. At least some members, including  Fury, were controlled by control chips.
The Infinity, Inc. members were interviewed by
Infinity, Inc. fought with
Killer Frost in a fight staged by Lex Luthor.
Infinity, Inc. kneeled before King
By September, the Infinitors had expanded to include
Geo-Force and Kobold. Control chips were no longer used on its members. The Infinity Cadets were set up to train new meta-humans as potential Infinitors.
The Infinitors intervened when
a meta-teen was attacked by anti-meta thugs. Unbeknownst to Geo-Force, the leader of the thugs was Everyman in disguise.
Trajectory led a mission on behalf of Zviad Baazovi to intimidate Minister Josef Mueller into leaving Markovia, as he was a non-meta.
Royal Palace, Geo-Force and the Infinitors prepared to act on Fury's intel on Count Vertigo's whereabouts, hoping to capture the escaped Count and rescue the kidnapped Perdita Vladek.
They went to some woodland cabins where the armored attackers that freed Vertigo and took Perdita were spotted. It was a trap however, and they soon came under attack. Trajectory found Perdita and Brion took her back to Palace, but Trajectory then reported to the nearby Baazovi, who ordered the armored attackers to flee.
Lex Luthor created the Everyman Project, opening the market for regular people to become heroes through genetic enhancements. He also had his own team of them, which he later renamed Infinity, Inc.—after buying the rights to that name from the estate of Sylvester Pemberton, the original Star-Spangled Kid and later Skyman. The original Infinity, Inc. was a team of children and sidekicks to the heroes of the Justice Society.
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Krieg, Jim, Adams, Jeremy (writers) & Zwyer, Mel (director) (August 27, 2019). " Nevermore". . Young Justice Season 3. Episode 26. DC Universe.
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Vogel, Michael (writer) & Heuck, Vinton (director) (May 19, 2022). " Ego and Superego". . Young Justice Season 4. Episode 23. HBO Max.
Giacoppo, Paul (writer) & Berkeley, Christopher (director) (July 23, 2019). " Elder Wisdom". . Young Justice Season 3. Episode 19. DC Universe.
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Fogel, Rich (writer) & Berkeley, Christopher (director) (August 13, 2019). " Antisocial Pathologies". . Young Justice Season 3. Episode 22. DC Universe.
Callan, Jonathan (writer) & Heuck, Vinton (director) (August 27, 2019). " Into the Breach". . Young Justice Season 3. Episode 24. DC Universe.
Weisman, Greg (w). Jones, Christopher (a). Wright, Jason (col). Abbott, Wes (let). Meares, Ben, Kubert, Katie (ed). " Ominous Tidings" (July 12, 2022), Young Justice: Targets DC Universe Infinite: DC Comics