But it was their jokes about Batman that stole the show and ... "The Flash." "When [Keaton] arrived to the set, the Batcave was already finished and it was lit and everything," "The Flash ...
Help comes in the form of Supergirl (Sasha Calle) and a blast from the past — Michael Keaton's Batman, a cameo that's strategically been used in marketing, likely to take some of the attention ...