Megan Gale is most recently known as playing The Valkyrie in 'Mad Max: Fury Road.' If you've seen that movie, then you know the tough presence she brings to the screen. I believe that she could stand toe to toe with Superman and Batman at her side. That's for sure.
Megan Gale doesn't have many credits to her name, but she does have some bragging rights. At one point Megan Gale actually had the role of Wonder Woman in the bag. The project was a 2007 version of the film titled 'Justice League: Mortal.' It would have also starred Armie Hammer and D.J. Cotrona as Batman and Superman respectively. If you're wondering what happened to the film, it never got made, but some photos exist of Megan Gale in Wonder Woman's costume, so at least she'll always have that as proof.