Superman is a 1988 animated Saturday morning television series produced by Ruby-Spears Productions and Warner Bros. Television that aired on CBS featuring the DC Comics superhero of the same name (coinciding with the character's 50th anniversary, along with the live-action Superboy TV series that year).
Veteran comic book writer Marv Wolfman was the head story editor, and noted comic book artist Gil Kane provided character designs. Wiki
This series is the third animated Superman series (the second was the Filmation-produced The New Adventures of Superman).
It is also notable for being the first appearance of the Superman mythos following John Byrne's major relaunch of the character (the series reflected the new conception with a measured fidelity, such as having his major recurring enemy, Lex Luthor, as a corrupt billionaire industrialist as in the comics). Like the comics, Luthor is fully aware that the large ring he wears is fastened with a kryptonite stone.