💔👨‍🔬💀+🦸‍♀️⬆️💥☀️

#Crisis on Earth-X #martin stein #professor stein #firestorm #overgirl #supergirl #final battle #arrowverse crossover

🌍+💥+🤝+📺

#crisis on infinite earths #arrowverse crossover #tv event #shared universe #showrunner #DC TV