Miss Thing

Darla Deering was a pop star who dated Johnny Storm, the Human Torch of the Fantastic Four.

When Mr. Fantastic planned a trip through space and time, he tasked each member of the team to find a suitable replacement just in case, as the travel was through time, they would return four minutes after they departed.

As Johnny forgot to find one, he rushed to Darla's apartment and asked her to take his spot in the Fantastic Four, alongside Ant-Man (replacing Mr. Fantastic), Medusa (replacing the Invisible Woman) and She-Hulk (replacing The Thing), which she accepted. Four minutes after the Fantastic Four departed, they didn't return, prompting the newly cobbled together team to become the acting Fantastic Four and watch over the Future Foundation.