Fantastic Four

Origin
Reed Richards, his fiancee Sue Storm, her twin brother Johnny Storm, and Reed's best friend Ben Grimm were exposed to energy from the Tesseract, which was being experimented on at the Baxter Building. As a result, the four friends gained superhuman abilities: Reed could stretch, Sue could project force fields and turn invisible, Johnny could light himself on fire and fly, and Ben was transformed into a rock-creature.