Birth Name: Kal-El
Alter Ego: Clark Kent
Birth Parents: Jor-El and Lara El
Foster Parents: Jonathan and Martha Kent
Love Interests: Lana Lang (High School sweetheart), Lois Lane

Bio: When a mounting chain reaction threatened to destroy the distant planet Krypton, Jor-El tried to warn the planet's highest councilmen. However, due to their blind and misplaced faith in the A.I. monitor Brainiac, the Council disregarded Jor-El's warnings. As soon as he realized it is too late, Jor-El and his wife, Lara El, with great sorrow embarked their beloved son Kal-El in a ship set to take him to a distant planet.

When he arrived at Earth, more precisely, in Smallville, Kansas, Kal-El was found by Martha and Jonathan Kent. They decided to take the marooned child home as if he were their own born son. Kal-El grew up as Clark Kent and during his teen years, he soon came to see that he was not as other adolescents. Realizing that time had come, Martha and Jonathan decided to tell Clark the truth and showed him the space ship in which he was found as a baby. Inside, there also was a strange device that Ma and Pa could not figure out. The apparatus was activated by Clark's DNA alone and it contained a recorded message from his birth parents. They told him why they were compelled to send their son off to another planet. They also explained why they had chosen Earth in particular: unlike Krypton that has a red sun, Earth's yellow sun contains properties that would grant Clark certain abilities while he was growing up. Jor-El and Lara knew this way he would be protected from any harm. Finally, they warned to him that because of this, some people might want to destroy him, but despite of that, he should never use his powers in anger. Clark didn't take this information too well, but eventually he came to terms with whom he is.

After graduation, Clark moved to Metropolis and got a job as a journalist for the Daily Planet, so that he could hear about disasters as they occured and then save the day. There he met Lois Lane, a lively journalist who inadvertently coined his alter ego name... 'Superman'. Superman decided to give Lois an interview so that the world learned of his story and benevolent intentions. Due to Lois's knack for getting herself into danger and subsequent rescues by Superman, the two develop a close bond and eventually fall in love for each other.

During a demonstration of a new weapon system held by businessman Lex Luthor, Clark was seen in public as Superman for the first time, as he tried to foil an attempt to steal Luthor's LEXO Suit. Despite failing, Clark soon unveiled a plot that involved a deal between Luthor and the Kasnian terrorists to arrange his weapon to be stolen in exchange for a million dollars. When confronted by Superman, Luthor showed his true colors and tried to lure Superman into working for him. Superman attentively listened to Luthor's babbling, to which he simply replied with a menacing "I'll be watching you, Luthor".

Superman faced many enemies, but few were as devious and dangerous as Lex Luthor. He tried over and over to control Superman, resorting to all sorts of schemes and plots. However, if there is someone worse than Luthor, that would be Darkseid, the tyrannical ruler of Apokolips. Darkseid was fixated on taking over Earth; and for that he needed to go through Superman. So, he resorted to the most unspeakable actions to meet his goals, causing a great deal of pain and suffering for Superman in the process.

Powers & Abilities: Superman's powers include flight, super strength, near invulnerability, telescopic, x-ray and heat vision, acute hearing and precise muscle control that allows him to impersonate anyone's voice.

Vulnerabilities: Superman is vulnerable essentially to three things: red sunlight, kryptonite, and magic. The red sunlight negates the effect given by Earth yellow sun, which means that Superman becomes as vulnerable as any other human being. Kryptonite is a radioactive piece of rock from the exploding planet of Krypton. Just a tiny piece of kryptonite is enough to make Superman ill, and a larger quantity renders him so weak that a prolonged exposure can effectively kill him. Finally, Superman has no defense against magic, so he's as susceptible to mystic forces as a normal human being.

For further character development, refer to Superman's bio in the Justice League Unlimited's character guide.

Bio: Lex Luthor is Metropolis most powerful business man. He runs LexCorp, a technology based company and to the general public, Luthor is known as a benevolent philanthropist. However, all of his actions have second intentions, whether being a charity event or a selfless donation. Most of his wealth comes from gun smuggling and business with terrorists. During a demonstration of a new weapon system, Lex’s latest invention, the LEXO-SKEL SUIT 5000, is stoles by armed terrorists. It is revealed later that Luthor was in on the theft of the suit in exchange of a large sum of money. Luthor has been under Superman’s attentive watch ever since.

Luthor repeatedly tried to gain control over Superman, but after coming to the conclusion his efforts were futile, he decided it would be better to kill him. The first opportunity presented itself as the kryptonite. Thanks to a lucky chain of events, Luthor found himself in the possession of a stone that apparently had the ability to weaken Superman so much, that a longer exposure to it could even kill him.

Aware of the stone’s potential, and conscious that it wouldn’t be enough to kill Superman on its own, Luthor used it as a battery to power a robot made of an indestructible alloy called metallo. Then, he only needed a brain to insert into the robot. In order to do so, Luthor turned to John Corben, a conman who was involved in the LEXO Suit affair and was sent to prison by Superman. Using Corben’s hatred against the Man of Steel in his favor, Luthor infected Corben with a rare fatal disease, so that he would accepted the transplant, and turned him loose against Superman.

Convinced he could never control Superman, Luthor decided to create his own Man of Steel from a strand of Superman’s DNA. However, the cloning process was unstable and the clone ended up with a big mental retardation and skin discoloration. Once it became obvious the project was fruitless; he decided to disposed of Bizarro, the imperfect clone wittily named by Mercy, and all the clones in production.

Luthor is always accompanied by his body guard, Mercy Graves, the only person who seems to show any sort of emotion towards him. However, the feeling is not mutual. Luthor allows himself to make associations whenever needed, but he always means to be the most benefited party. From all of his various liaisons, the most dangerous was the partnership he made with Brainiac, because it not only bestowed Brainiac with control over every defense computer on the planet, albeit momentarily, but also resulted in long term repercussions.