Many spoilers ahead for all four parts of the "Crisis On Earth-X" crossover. If you haven't watched yet, you may want to check back later once you have the chance to tune in.
The long-awaited "Crisis On Earth-X" crossover event has finally aired on The CW, and we got to see just how the heroes of Arrow, The Flash, Legends of Tomorrow, and Supergirl could work together to fight Nazis. The good news is that the heroes were able to kill two of the three big bads of the crossover as well as take out the legions of Nazis who invaded from Earth-X; the bad news is that Martin Stein was killed in the process. A lot happened, and all four shows will inevitably be different in the aftermath. Read on for how each will likely change moving forward.
Oliver and Felicity tied the knot. In a surprise twist, Oliver and Felicity got married as well as Barry and Iris in "Crisis On Earth-X." Not only will Felicity presumably move in with Oliver and William, but she also can't be forced to testify against Oliver in Samanda Watson's case against him. Double win!
Earth-X Oliver is dead. Nobody on Arrow needs to worry that Oliver's evil Nazi doppelganger will be back in the future, which is a very good thing considering how often Oliver's nemeses seem to come back to haunt him.
The Green Arrow was BACK. Oliver was at his very best as a hero in "Crisis On Earth-X." He was smart, strategic, and totally badass as the leader of all the good guys. He may now be back in peak Green Arrow mode on Arrow, even if he only begrudgingly donned the hood again.
Vigilantes saved the world from Nazis. The scale of the Nazi invasion was so huge that the battle must have gained national attention. Perhaps the fact that a group of vigilantes just staved off a Nazi invasion from another world will lessen the heat on Team Arrow from the currently anti-vigilante public in Star City.