SPOILER WARNING: This article contains major spoilers for "Crisis on Infinite Earths," the latest Arrowverse crossover.
With all of the Arrowverse's heroes now living on the same Earth, it is only fitting that they would finally come together to officially form the Justice League in the conclusion of "Crisis on Infinite Earths."
After the casts of DC's Legends of Tomorrow, Flash, Arrow, Supergirl and Black Lightning defeated the Anti-Monitor, they gathered together in an empty warehouse for a memorial service to Oliver Queen. Once that was complete, Barry Allen revealed he picked the warehouse so they would all have a place to meet if they ever need to team-up again. He then unveiled the Justice League table and chairs with each hero's symbol printed on it.
The creation of the Justice League was only one of many surprising outcomes of the latest Arrowverse crossover. Instead of a Multiverse, we now have all the Earths merged together, meaning there is a greater chance for crossovers between shows. Also, with Arrow nearing the end of its run, Oliver Queen remains dead, though his sacrifice is what enabled his friends to create an entirely new universe, where he is remembered as the Earth's first hero.
The final chapter of "Crisis on Infinite Earths" concluded with the Super Friends music playing in the background, and an outside look at the new Hall of Justice.
"Crisis on Infinite Earths" will soon be available on The CW's streaming service in its entirety.