While Kara Zor-El's appearance at the end of James Gunn's Superman was a very pleasant surprise, Warner Bros. Discovery's plan to fast-track a standalone Supergirl feature always felt a little dubious. It seemed odd that, after Superman, the studio wanted to flesh out its new cinematic universe with films about another Kryptonian and one of Batman's less notable villains. But Gunn implored fans to have faith in his vision and trust that the DCU would become a world of interconnected stories that put WBD's last batch of comic book movies to shame.
Though hopes were high for Supergirl, the movie has turned out to be a bit of a dud. Critics ha …
