Crisis on Infinite Earths is almost here. This year's annual Arrowverse crossover promises to be the biggest so far, adapting one of the most renowned events in the history of DC comics. That'd be exciting enough, but it’s going to feature characters and actors from DC’s long history on the silver and small screens. We’re getting Burt Ward from Batman ’66, Tom Welling from Smallville and possibly Lynda Carter from Wonder Woman. Brandon Routh is getting back into the cape, too, as Kingdom Come Superman, and longtime voice of Batman Kevin Conroy will finally be playing Bruce Wayne in live-action. But the surprises don’t stop there, as Michael Keaton’s Dark Knight may also appear (even if just in a picture).