Sent from the destroyed world of Krypton, Kal-El was found and raised by the Kents as their son Clark, trying to blend in and hide his growing powers. Deciding to pursue a normal life and riches via the advantages his talents would offer, his hand was instead forced when Tyrell, a representative of the Dheronian race that destroyed his homeworld, pursued him to Earth to execute both him and the planet. With no other choice, he revealed himself to the world and defeated Tyrell, deciding to continue as a 'super hero', going on to battle enemies like Parasite, the Luthors, and his uncle Zod-El, the true architect of Krypton's destruction, as Superman.
Powers and Stats
Name: Kal-El/Clark Kent/Superman
Origin: DC Comics
Age: Early twenties
Powers and Abilities: Superhuman Physical Characteristics, Stellar Radiation Absorption, Flight, Enhanced Senses (Possesses super hearing and telescopic and x-ray vision), Regeneration (At least Mid-Low), Genius Intelligence, Heat Vision, Super Breath, Ice Breath
Attack Potency: City level (Able to hurt Parasite who possessed his powers when a 30 megaton nuclear weapon could not, and it is repeatedly noted that battles between himself and powerful opponents could lay waste to cities)
Speed: Massively Hypersonic (Managed to get to Metropolis from the Arctic in approximately one minute.)
Lifting Strength: Unknown
Striking Strength: City Class
Durability: City level (Can withstand combat against people on similar levels as him)
Standard Equipment: Unknown
Intelligence: Extraordinary Genius (Unable to be measured by conventional I.Q. tests. Able to formulate in seconds the solution to an equation a team of the nation's top scientists could not crack over the course of years. Also once noted that he cannot enjoy most detective stories as he can always determine the identity of the criminal within the first five minutes)
Weaknesses: Kryptonite can kill him, red sun and increased gravity are both able to reduce or eliminate his powers, metals from his homeworld or of comparable strength can injure him.
Note: To see the "Earth-One" Superman of the Pre-Crisis on Infinite Earths continuity, rather than the star of the Earth One series of original graphic novels, see this profile.