The CW has released several publicity photos from the second chapter of its upcoming "Crisis on Infinite Earths" event, revealing three incarnations of Clark Kent/Superman slated to appear in the Arrowverse crossover.

None of different versions are seen together, but all photos are scenes from the upcoming December 9 episode of Batwoman. One photo shows Smallville's Tom Welling as Clark, and another features Supergirl's Tyler Hoechlin as Clark on what appears to be the same set. The two photos portend these two incarnations at least stand to meet early on in the crossover.

RELATED: Crisis on Infinite Earths Photo Officially Debuts Smallville's Tom Welling

Hoechlin is also seen as Superman in another shot, as is DC's Legends of Tomorrow's Brandon Routh. Routh appears as both Clark and the Kingdom Come incarnation of the Man of Steel, and the photos seem to be from scenes taking place inside the offices of The Daily Planet. It appears from the photos collectively that Hoechlin and Routh will meet face-to-face as their respective versions of Superman.

The Flash's Candice Patton and Supergirl's Elizabeth Tulloch are also featured as their respective characters, Iris West Allen and Lois Lane. Another features Kevin Conroy in his role as Kingdom Come's Bruce Wayne. The collection of publicity stills also contains Ruby Rose as Kate Kane, confirming that she's not being completely crowded out of her own show.

RELATED: Crisis: First Photo of Kevin Conroy Spoils Which Earth His Bruce Is From

"Crisis on Infinite Earths" begins Sunday, Dec. 8 and 8 p.m. ET/PT on Supergirl, then continues in Batwoman on Monday, Dec. 9 at 8 p.m. ET/PT and in The Flash on Tuesday, Dec. 10 at 8 p.m. ET/PT. After the winter hiatus, the crossover will conclude on Tuesday, Jan. 14 in Arrow at 8 p.m. ET/PT and in DC's Legends of Tomorrow at 9 p.m. ET/PT.