Crisis On Infinite Earths: 36 Easter Eggs, Cameos And References You Probably Missed

33. Batman (1966)

The last of the earths to receive a red sky in the prologue, we returned to Gotham City only this time, it was the colorful and light-hearted landscapes of Earth-66.

With the classic Batman theme playing in the background, it was a joy to see Batman-66's Robin, Burt Ward - dressed in traditional Robin colors as he walked his Bat-Hound down the street - exclaiming "Holy crimson skies of death!".