The CW's Flash Spoils Major Cameo Appearance in Finale

The Flash's upcoming series finale is confirmed to bring back an Arrowverse mainstay. The Grant Gustin-led series recently delivered a game-changing episode where it finally resolved one major cliffhanger from Season 1, and the show is expected to feature more surprises as it brings the Arrowverse to a close. In this video, we discuss a major cameo appearance that will be featured in The Flash finale, which has already been confirmed by showrunner Eric Wallace. We also explore the theory of how the villain Reverse-Flash will make his return to torment Barry Allen once again.