10. The Flash Will Be Justice League's Comic Relief
Many critics have called Batman V Superman "too serious" and "not fun enough", but it looks like Justice League's tone will be a little on the lighter side. Producer (and Zack Snyder's wife) Deborah Snyder said, "Justice League is a little bit lighter because some of these characters, you have Flash, tend to be a little more comedic", and director Zack said, "One of the things that lightens it is having The Flash or having characters that are more optimistic." Whereas Batman V Superman essentially had two mopey heroes warring against each other, there will be a more upbeat tenor to the whole group it seems, though whether this will go the quip-heavy route of The Avengers remains to be seen.