The plot of Ant-Man and the Wasp was all about coming to the rescue of Janet Van Dyne, but apparently, her character could have turned out very differently.
While the Janet we met in the newest MCU movie was a kind person whose first act back in reality is to help somebody trying to hurt her, it seems that there were early conversations that, had things gone differently, could have made Janet Van Dyne the villain of the film.
Ant-Man and the Wasp director Peyton Reed was recently asked about the speculation that Janet could become a bad guy in the future and he revealed that the possibility had already been discussed at the beginning.