Smallville's Tom Welling is back as Superman for the Arrowverse crossover, "Crisis on Infinite Earths". 1 / 7
The crossover will show what happened to Clark after Smallville ended. 2 / 7
This means that "Crisis" can give Tom Welling's Superman a proper ending. 3 / 7
In the series finale, Clark was seen in-costume, but only at a distance and with CGI. 4 / 7
This is because Smallville followed a strict "No Flights, No Tights" rule. 5 / 7
However, this rule won't apply to the Arrowverse. 6 / 7
So "Crisis" can do what Smallville never could by letting Tom Welling suit up as Superman on-screen with the rest the heroes. 7 / 7