A 1960 story by Jerry Siegel expanded upon Luthor's origin and motivations, revealing him to be a childhood friend of Superman's who lost his hair when a fire destroyed his laboratory ; Luthor vowed revenge.

In 1960, writer Jerry Siegel altered Luthor's backstory to incorporate his hair loss into his origin.

This revised origin makes Luthor's fight with Superman a personal one, and suggests that if events had unfolded differently, Luthor might have been a more noble person.

James D. Hudnall's Lex Luthor: The Unauthorized Biography further expands on Luthor's origin.

The first one was in " History of Doom " when the Hall of Justice computer runs a tape showing Lex Luthor's origin.

This episode adapted Lex Luthor's silver age comic book origin, in which Superboy rescues Lex from a lab accident that causes him to lose all of his hair, becoming the familiar bald villain Superman fans have come to recognize.

In both " JLA " and " 52 ," Grant Morrison states that Luthor's ego leads him to believe that the only reason Superman commits good deeds is to somehow strike at Luthor and prove who is better, arguing that it is impossible for Superman to be as good as he appears to be.

He eventually marries a local woman named Ardora, with whom he fathers a son, Lex Luthor, Jr. After its debut, Lexor appears sporadically in various Superman comics as Luthor's base of operations, where he wages assaults on Superman.

In the opening weeks of 52, the Gotham City Police Department finds what appears to be Luthor's body in an alley.

He appears as a member of Lex Luthor's Legion of Doom.

He first appears as a member of Lex Luthor's Injustice Gang.

Parasite appears in a cameo in the DC Universe Animated feature Superman / Batman: Public Enemies, battling Superman and Batman along many other DC villains, trying to claim Lex Luthor's one billion dollars bounty on Superman.

In " Final Crisis " # 7, someone that looks like Captain Cold appears as a Justifier and is seen fighting the Female Furies alongside the other Justifiers under Lex Luthor's control.

He has been seen as a member of both Lex Luthor's and Aresia's Injustice Gang He also appears briefly in " Only a Dream " in which he fights with Hawkgirl.

He appears as one of the members of Lex Luthor's Legion of Doom.

Mercy Graves appears in Young Justice episode " Targets " as Luthor's main bodyguard.

Lois is initially sceptical that Lex could have fathered these adult men, but Clark Kent insists that no one can be sure of Luthor's true age since he was " a master of deception.

In the new movie, Kryptonian crystals are able to grow huge land masses and incorporate the properties of the surrounding environment ; a sliver taken from of one of the crystals used to test the theory causes Lex Luthor's basement to be filled with a huge crystal structure.

This is ultimately revealed to be a ruse set up by Luthor and Deathstroke to draw out the real assassin, a shape-shifter named " Facade ", who had apparently killed and impersonated a woman on Luthor's security detail.

Together, they locate and attack Alexander Luthor's tower, the center of the Crisis, only to be repelled by Superboy-Prime.

Following these events, Doomsday was released by Lex Luthor's Suicide Squad to battle Imperiex, a threat that was judged to be even greater than Doomsday himself.

Unlike his earliest appearances where he was portrayed as a warlord and a would be dictator, most of Lex Luthor's post golden age appearances portrayed him as a mere thief who would use his genius to rob banks.

Lana Lang became LexCorp's new CEO following Luthor's public acquittal from criminal charges, although the company seems to be heading towards bankruptcy.

* LexCorp is shown to be the home of Luthor's pet lizard Ignatius, in the cartoon Krypto the Superdog.

He attempts to convince the Martian Manhunter ( now an aged, bitter, near-powerless figure with his mind filled with Luthor's nanotechnology ) to stand up against Superman and the powers that be.

Knightwing arrives, but Luthor's allies vanish before they can be caught.

Amazo proved to be more than a match for the League when he copied their combined powers ; however, Luthor's downfall came when the Martian Manhunter allowed Amazo to copy his powers and read Luthor's mind, discovering that he was just using him all along.

Cadmus was later shown to be backed by Lex Luthor, who only financed the project in a grab for superpowers of his own ; a new AMAZO robot with Luthor's conscious mind implanted in it.

He would later be used by Batman as a " traitor " in the League in a ploy to defeat Lex Luthor's Injustice Gang.

She claims to be " the only one in Luthor's entire company who can get away with calling him Lex ".

In recent years, various writers have revived Luthor's mad scientist persona from the 1940s.

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.

It also leads to years of Superman, Luthor, and Supergirl concealing the truth from Luthor's sister, Lena Thorul.

During one such battle, an energy salvo from Luthor's battlesuit accidentally overloads the " Neutrarod "— a spire Luthor had built to counter Lexor's geological instability — resulting in the annihilation of Lexor's inhabitants, including his wife and son.

Luthor's trademark battlesuit from this era — a heavily-armored, flight-capable suit with kryptonite fixtures embedded in its gauntlets — was designed by George Pérez as part of the Super Powers toyline in the early 1980s and introduced as Luthor acted as Lexor's sovereign.

Meanwhile, Lois Lane discovers proof of Luthor's clone harvesting and false identity ; with help from Superman, she exposes the truth, and a despondent Superman helps to apprehend Luthor.

Brainiac manages to free himself from Luthor's control, forcing him on board the ship, and the two make their escape.

Grappling with the creature, Luthor's body and mental essence suddenly fused with it, learning that it evolved in the Phantom Zone and now seeks to escape from the grief and anger of the Zone prisoners.

Later on, the body resurfaces in a lab where his ex-wife Arianna Carlin ( played by Emma Samms ) with the help of devoted scientist Gretchen Kelly ( played by Denise Crosby ) freezes Luthor's remains and labors to bring him back from the dead.

Her storyline sees her simultaneously become the object of Lex Luthor's ( Michael Rosenbaum ) obsessions-after she saved him from drowning in the dam's destruction-and Jimmy Olsen's ( Aaron Ashmore ) affections, suffer a bout of amnesia, discover her father's ( Christopher Heyerdahl ) sinister motives and become a target of evil android Brainiac ( James Marsters ).

When Luthor unleashes Kon-El, Superboy comes close to destroying the Teen Titans, but he manages to free himself from Luthor's control before any tragedy occurs.

At the end of this storyline, Mxyzptlk indicates he has erased the knowledge of Superman's identity from Lex Luthor's mind.

Brainiac manages to free himself from Luthor's control, forcing him on board the ship, and the two make their escape.

Because his powers have been sapped by Luthor's kryptonite, Clark is unable to stop the villain from killing himself, however Luthor returns from the dead in Season 2.

However, thanks to Plastic Man infiltrating the group disguised as the Joker, coupled with Luthor's inability to understand the true motivations of heroism ( meaning that he underestimated what he would have to do to win Green Arrow's allegiance ), the League were able to turn the tables on Luthor's plot, subsequently taking the Stone from Luthor after taking out the other members of the Gang.

Luthor's project grants super-powers to Colby, who is given the codename Skyman after Luthor buys the rights to Infinity Inc. from the Pemberton Estate.

Most of the levels in the game are restricted to two types of gameplay ; in some levels, referred to as Ride Levels in the game's instruction manual, Superman is instructed to fly through a series of hoops by Lex Luthor ; in between, he is also tasked to perform certain feats such as battling Luthor's minions the Dark Shadows and rescuing civilians from natural or artificial disasters, firstly stopping two cars from trapping civilians.

In other levels, referred to as Maze Levels in the game's instruction manual, Superman has uncovered one of his friends from within one of Luthor's outposts, and must escape with them and defeat a boss.

Grodd is released from Luthor's mental grip and then shot into space, all the while screaming threats of revenge.