Superman, given the serial nature of comic publishing and the length of the character's existence, has evolved as a character as his adventures have increased. Initially a crime fighter, the character was seen in early adventures stepping in to stop wife beaters and gangsters, with rather rough edges and a rather looser moral code than audiences may be used to today. Modern writers have softened the character, and instilled a sense of idealism and moral code of conduct. Clark Kent, initially based somewhat on Harold Lloyd, has also been updated over the years. During the 1970s, the character left the Daily Planet for a time to work for television, whilst the 1980s revamp by John Byrne saw the character become somewhat more aggressive. This aggressiveness has since faded with subsequent creators restoring the mild mannerisms traditional to the character. Superman's powers have developed, and his adventures have accumulated, far beyond the Fleischer cartoon's intonation of a character "faster than a speeding bullet, more powerful than a locomotive, and able to leap tall buildings in a single bound." Initially the character could not fly, but this ability and many more have added to the character's appeal. Superman's weakness to kryptonite, now well established, was introduced quite late in the character's history, first appearing in the radio series in 1943. Superman's large cast of supporting characters includes Lois Lane, Jimmy Olsen, and Perry White, while many adventures have seen the character pitted against villains such as Lex Luthor, Brainiac, and Doomsday. (en)
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