VIDEO : Stephen Amell Explains Why Jensen Ackles Was On Arrowverse Set

Fans of the Arrowverse and Supernatural got quite the treat when Jensen Ackles, who stars in the long-running CW series, popped up on the set of the upcoming Elseworlds crossover event. While we all wish that this meant Ackles would be appearing alongside Arrow, Flash, and Supergirl in the crossover, that simply isn't the case.Arrow ...