When the concept of the DC multiverse began to take hold, Luthor's red-haired incarnation was rewritten as Alexei Luthor, Lex's counterpart from the Earth-Two parallel universe.

When Luthor admits that he had not only anticipated the attack, but had arranged for it to occur in order to lure Superman out, the Mayor deputizes Superman to arrest Luthor for reckless endangerment.

When the Justice Society's forced attempt to stop them by sending Hawkman and Captain Marvel against them met with failure and resulted in Superman and Batman briefly infiltrating the White House, Luthor, in an enraged and desperate gambit after Superman's rapid defeats of his plans, used a variant combination of the " super-steroid " Venom ( a chemical associated with the Batman villain Bane ), liquid synthetic Kryptonite, and an Apokoliptian battlesuit to fight Superman directly.

When approached by John's niece Natasha Irons, Luthor gladly allows her to be one of his first test subjects.

When called a " monster " by Thunder, Luthor claims it is the ones who sent them there who are the real monsters, and that he is the hero.

When deputy Violet Lantern Wonder Woman uses her magical lasso to restrain Luthor, under its spell of truth, Luthor is forced to confess that he secretly wants to be Superman.

When Nekron is defeated, Larfleeze takes the ring from Luthor, leaving him powerless, and allows Luthor to remain on Earth with the Green Lanterns ( although Sinestro notes that this is the first time Larfleeze has given anyone anything ).

When Brainiac accuses him of showing paternal feelings for Conner though, Luthor denies it, saying that he only wants his property back, and has no fatherly feelings towards Superboy.

When Lex Luthor tries to use his Kryptonite ring on Superman, it doesn't work due to the fact that Superman was actually Batman in disguise.

When accused of being a traitor by Luthor, she reveals Martian Manhunter is posing as Blockbuster, which would soon lead to the hero's death.

When Superman is turned evil by the Red Kryptonite necklace that was unknowingly given to Lois Lane by Lex Luthor, Krypto teams up with Batman to hold off Superman until the effects of the Red Kryptonite wore off.

When the League confronts Lex Luthor, it is revealed in a major plot twist that he had put a part of himself in Luthor in their confrontation years earlier, which has been influencing Luthor, curing his cancer and giving him superhuman strength.

When the Society lodged a final ambush against the Six, Savage threatened to kill Luthor if he didn't call off the attack, saying that he couldn't allow anyone to harm his daughter.

When they learn that the Superman they defeated was a robot standing in for the real Man of Steel who was on a space mission, Luthor ordered his men to return the gold.

When CEO Lex Luthor was elected President of the United States, Talia al Ghul took over the company.

When in the parking lot, Roy Harper confronts Lex Luthor as he orders Mercy Graves to disarm.

When Green Lantern asks why Lex Luthor is at the funeral, Lex Luthor states that Superman was a worthy adversary even though he is glad that Superman is gone.

When the body of Luthor Harkon was unwittingly taken on board the long-boat of Norse raiders and taken to Lustria, he created an undead realm known as the Vampire coast of zombie pirates from shipwrecks that became feared pirates and attacked the Lizardmen of the city of Huatl.

When Toybox faces Andy alone, she unleashes all of her toys to protect herself, and then reveals the final thing left in Pandora's Box that can heal Andy Soames desperate mind: Hope.

When they realize this is not working, Cameron unleashes his pent-up anger against his father, kicking and damaging the front of the Ferrari.

When Robin and Supergirl attempt to stop his plans, Scarecrow unleashes a new fear toxin that is powerful enough to affect a Kryptonian.

When the Joker is told he is dying by his doctor, he unleashes Joker juice on the inmates at the Slab, causing a breakout.

1681: When Sir Isaac Newton turns his restless mind to the ancient art of alchemy, he unleashes Philosopher's Mercury, a primal source of matter and a key to manipulating the four elements of Earth, Air, Fire, and Water.

When the time traveling mutant Trevor Fitzroy unleashes the mutant-hunting robots called the Sentinels on Emma Frost and the Hellions, Emma places herself in a psychic coma in order to survive the ordeal and nearly all of her students are killed.

When Dormammu unleashes his Mindless Ones upon Super Hero City, Dormammu manages to steal the fractals from the Vault and Villainville while taking Captain America and Doctor Doom hostage.

When the Joker unleashes a radar jammer that can cause aircraft to crash, Batman and Batgirl battle him and his gang before Dick, as Robin, intervenes.

When she unlocks her powers she unleashes a devastating explosion that levels the city.

When he does he unleashes, undead forces of feudal Japanese warriors to destroy the world of its people, opposed only by the two protagonists, a ninja or a Western cowboy ( named Dan and Bill in the SNES version ).

When they refuse, she unleashes the power of the Destroyer.

When Balmorra has thrown seemingly everything against Sedriss, Sedriss unleashes Shadow Droids, another of Umak Leth's creations: droids fighters with the brains of fallen Imperial aces augmented by the power of the Dark Side.

When the six fail to cross it, and Dume denounces them as " imposters ", he unleashes the Vahki ( the city's law enforcers ) upon them.

When Caesar unleashes the Teutons into battle, all was lost for the Gauls and they withdraw amidst the large field of dead bodies.

When Metalder approaches him, Wogger unleashes more aggressive attacks, until Metalder realizes he was a lost cause and uses his Laser Arm attack to slice Wogger in half.

When the Rangers are on a fieldtrip, Ethan translates some Egyptian heiroglypics, which unleashes Tutenhawken's curse on him.

When encountered by the heroes, Tinkerer unleashes some robotic soldiers on them.

When rejected by the Legion, the Bizarro teen creates his own Bizarro version of the Legion, which Superboy eventually persuades him to disband.

When the universe-destroying Crisis strikes, Superboy lacks the power to save his Earth, but the Time Trapper can do so, provided Kal-El helps him capture the Legion.

When not accompanying Superboy / Superman, Krypto spent much of his time romping through space ; while on Earth, however, he stayed with the Kent family, posing as their pet dog, " Skip ".

When confronted by Superboy later on, the imp declares that he had no knowledge of his adventure with Young Justice.

When it came to a warehouse storing Apokolips weapons, Desaad threw the Father Box into the formation of Infinity-Man in order to control him and has Infinity-Man attack Superboy and Wolf.

When Superboy and the New Genisphere reclaim control of Infinity-Man, Desaad retreats back to Apokolips.

When Superboy and the Forever People find a warehouse containing the weapons from Apokolips, they are ambushed by Desaad of Apokolips.

When the team crash lands and is left stranded on Apokolips after Superboy took control of their shuttle in an attempt to rescue Steel from the Black Racer, tensions explode between Superboy and Robin and those suspicions are brought to light as Superboy, Wonder Girl, Impulse, and Cissie all express concerns regarding trust-although Secret reaffirms her faith in Robin while Empress acknowledges Batman's reasons for developing the strategies, with Lobo dismissing it as impossible for anyone to take him out -, effectively leaving the team divided.

When Superboy and the Forever People find an abandoned warehouse consisting of technology from Apokolips, they are ambushed by Desaad and Intergang.

When they arrive at Geneva, Parasite has assembled the black hole generator but then Superboy suddenly goes berserk after using Lex Luthor's shields and attacks Parasite.

When Robin and Superboy catch up to Rumaan Harjavti, they are attacked by Bialyan soldiers using Apokoliptan technology.

When Superman and Batman are said to be " captured " by President Lex Luthor in Superman / Batman " Public Enemies ", Cir-El teams up with Superboy, Krypto, Natasha Irons, and the Batman Family to rescue them.

When Mark Desmond turns into Blockbuster, he knocks down Guardian before fighting Robin, Aqualad, Kid Flash, and Superboy.

When Nightwing, Superboy, and Wonder Girl attack Luthor's base, they free all the captive heroes, including Power Girl and Black Adam, who are then confronted by the Psycho-Pirate.

When they are unable to gain control of Superboy, they summon Cosmic Boy, Lightning Lad, and Saturn Girl of the Legion of Super-Heroes from the future and mentally command the trio to capture him.

" When Clark is not Superboy ; he ought to be a well-rounded individual.