Retcon in the context of "Supergirl (Kara Zor-El)"

"With great power comes great responsibility" is a proverb popularized by Spider-Man in Marvel comics, films, and related media. Introduced by Stan Lee, it originally appeared as a closing narration in the 1962 Amazing Fantasy #15, and was later attributed to Uncle Ben as advice to the young Peter Parker. The idea—similar to the 1st century BC parable of the Sword of Damocles and the medieval principle of noblesse oblige—is that power cannot simply be enjoyed for its privileges alone but necessarily makes its holders morally responsible both for what they choose to do with it and for what they fail to do with it. After it was popularized by the Spider-Man franchise, similar formulations have been noticed in the work of earlier writers and orators. The formulation—usually in its Marvel Comics form—has been used by journalists, authors, and other writers, including the Supreme Court of the United States.