At San Diego Comic Con, there were two Flash’s in attendance. Ezra Miller for the DCEU, and Grant Gustin for the Arrowverse.
The former of which not only got to show off his Barry Allen in the Justice League trailer, but got to reveal his official Flash costume for the DCEU. After debuting it, CW’s Flash, Grant Gustin, was asked what he thought about the movie version’s outfit.
“Oh sick, I haven’t seen it,” Gustin told Screen Rant at Comic-Con International as he was handed a phone displaying the “Justice League” group shot. “They’re completely different. Yeah, I mean I was kind of expecting this. I heard it was going to be kind of like’ Injustice.’ […] Yeah, that’s sick. Um… yeah, it’s sick.”
Gustin added that he’s glad the movie costume differs from his television version, “Because ours is like a street, vintage feel that I don’t think has been done in any other version of the character.”