CW’s big Crisis on Infinite Earths was already going to be a huge crossover, what with five of its shows based on DC Comic characters joining in the fun. But then Burt Ward of the ‘60s Batman TV series was cast and it seemed like the crossover was going to have an Easter egg or two. Turns out it’s going to have a lot…
Source: io9 – 12 People Not Yet Cast in CW’s Crisis on Infinite Earths, But Who Absolutely Should Be