Superman possesses a number of extraordinary powers, rendering him -- in terms contemporary to the 1950s -- "faster than a speeding bullet, more powerful than a locomotive, and able to leap tall buildings in a single bound". Other powers include X-ray vision, heat vision, near-invulnerability to damage, and the power of flight. The origin of Superman's powers is the solar radiation of Earth's sun, which differs from the radiation of the star around which Superman's native planet, Krypton, orbits. The yellow sun of earth grants him powers he would not have under Krypotn's red sun. The remains of the shattered planet spread throughout the universe as a green crystalline or metallic substance known as kryptonite, which is harmful to Superman and robs him of his powers when it is in close proximity to him. A variant form of kryptonite is "red kryptonite", which does not usually damage him directly but has highly unpredictable effects on his psyche and powers (for example, red kryptonite exposure once transformed Superman's head into that of a giant ant). There have been a number of other lesser-known variants of kryptonite, introduced sporadically over the years whenever a particular plotline required them and then forgotten, but in a recent revision of the DC shared story universe they have been retconned out of existance.
Both Superman's name and the premise of his character owe a large debt to the concept of the Übermensch?, developed by the 19th century philosopher Friedrich Nietzsche.
During the 1980s, the rapper Wonder Mike was styled as being the romantic rival of Superman for the affections of the Lois Lane.