<P> In Supergirl (TV series, 2015) Season 1, episode 2 Kara states that the Kryptonian symbol stands for her family's motto, "Stronger together ." </P> <P> Marv Wolfman's novelization of the film Superman Returns depicts the symbol as belonging to one of the three primary houses of Krypton that brought peace to the planet after a civil uprising, a serpent coiled inside a shield, a warning not to return to the ways of violence and deception . The shield has since been taken as a coat of arms, resulting in Jor - El's continued presence in the council despite his "mad" findings . The other two are merely described, including Pol - Us' eye of vigilance and Kol - Ar's open hand of truth and justice . </P> <P> In almost all versions, Superman's red cape has an all - yellow version of the logo, with a thin black (in the comics) or red (in movies, matching the red color of the cape) line separating the areas . A notable exception is in Superman: The Animated Series, where the logo was absent from Superman's cape . This was due to the difficulty in animating the S on the flowing cape . In the 2006 film Superman Returns, the logo appeared on the belt buckle in reverse colors (yellow diamond and S with red background pieces) instead of on Superman's cape . The logo is also absent from Superman's cape in the 2013 film Man of Steel . In the 2011 reboot of the comic book series, on his cape is a black pentagon and S with red background pieces . </P> <P> In the 1960s the tiny bottle city of Kandor, the miniaturized capital city of the planet Krypton, resided in Superman's Fortress of Solitude . Originally, certain inhabitants resembling Kal - El formed the Superman Emergency Squad and would, on occasion, leave the bottle, enter the Earth's atmosphere and gain super powers in order to aid Superman . As designed by artist Curt Swan, their uniforms were similar to that of Superman save for the' S' on their chests which resembled the early version, the' S' and border in red on a yellow field, but in an elongated triangle . </P>

Blue s with white line through it logo