Replacing the comic-book heroics is a playfully bittersweet story about a character as outside the norm as the average superhero. The obsessiveness and earnestness that fuel Simon’s acting make him an outsider, a pest, a poor fit in society, before his powers can even enter the picture. The only Wonder Man in the show, which was created by Destin Daniel Cretton (the director of “Shang-Chi and the Legend of the Ten Rings”) and Andrew Guest (a writer on “Community” and “Brooklyn Nine-Nine”), is a fictional hero Simon worshiped as a child. When Simon auditions for a new Wonder Man movie, the twist is that he would rather play the hero than be the hero.