Stargirl season 2 sets Arrowverse crossover with The Flash star
The actor will guest star in episode 9 and reprise his role as the Golden Age Flash/Jay Garrick, marking the first time Stargirl has entered the Arrowverse. The episode will see Garrick play a part "in a pivotal flashback episode" that establishes "the Golden Age Flash as a member of Earth-2's Justice Society of America", per an official description. CBS Photo Archive / ContributorGetty Images
Source: digitalspy.com