Crisis on Infinite Earths will feature Brandon Routh's first take on Superman... 1 / 7
...Since 2006's Superman Returns. 2 / 7
The Arrowverse cast told TV Guide they were stunned by Routh's transformation into Superman. 3 / 7
"Seeing him in the Superman outfit was just —everybody gasped," said Arrow's David Ramsey. 4 / 7
The Flash's Carlos Valdes said it was amazing to watch Routh switch between Atom and Superman. 5 / 7
Hartley Sawyer called seeing Routh in action, "one of the coolest things" he's ever seen. 6 / 7
"Crisis on Infinite Earths" begins Sunday, Dec. 8 on Supergirl 7 / 7