Superman succeeded in establishing a vast, detailed world with a rich history that surrounds aliens and metahumans. It even introduced several iconic comic book characters with roots far beyond Superman’s, including the Green Lantern, Hawkgirl, Mr. Terrific, Metamorpho, and the Engineer. This was all done on planet Earth.

James Gunn recently shared why Supergirl didn’t tell the truth about Kal-El’s parents’ message to him in Superman. Released in theaters across the globe on July 11, 2-25, the film featured a cameo appearance from Milly Alcock as Kara,

Supergirl is a way more rock & roll film. It’s a little bit rougher, in certain ways. She’s a tougher character. She’s not Superman at all. And so it’s not the same. This movie really is for everybody.