Before a wave of anti-matter wiped out the multiverse, the crossover offered glimpses at some Earths we hadn’t seen before. And that was how we got appearances from Smallville‘s Clark (Tom Welling) and Lois (Erica Durance), Brandon Routh as Clark, Kevin Conroy as Bruce Wayne, Tom Ellis as Lucifer, and quite a few others. But it’s unlikely we’ll get any more given the end of the third hour.
Katie Yu/The CW
Black Lightning joined the fight
Pariah brought Jefferson to Earth-1 as his Earth was destroyed to help them save humanity. And Jefferson’s power came in handy as Team Flash and Earth-90 Barry figured out how to stop the Anti-Monitor’s machine.
The identities of the paragons
As the Monitor revealed, across space and time were seven heroes, “beings of the purest will who can ultimately defeat the Anti-Monitor and help save the universe.” These paragons are Barry (Love), Ryan Choi (Humanity), J’onn J’onzz (Honor), Kara (Hope), Routh’s Clark (Truth), Kate (Courage), and Sara (Destiny).
Pariah saved the paragons
The heroes realized too late just how much the Anti-Monitor had been able to take control of, namely, Lyla. As his wave of anti-matter destroyed Earth-1 and came for the Waverider, Pariah was able to send the paragons somewhere the Anti-Monitor couldn’t follow: the Vanishing Point, “a point outside of time and space.”
Lex rewrote destiny
But once the paragons were safely at the Vanishing Point, Clark collapsed and was replaced by … Lex! When he’d had the Book of Destiny, he saw the paragons would end up there and “thought destiny could use a little rewrite.”
The Anti-Monitor defeated the Monitor
After being MIA for quite some time, Lyla returned to the Waverider near the end of Episode 3, only for the others to realize the Anti-Monitor was controlling her. And through her body, the Anti-Monitor declared it time to end the age of heroes. He easily overpowered the Monitor.
Almost everyone has technically been wiped out of existence
Throughout the crossover thus far, a wave of anti-matter was ripping its way across the multiverse, with Earth-1 the last target. While the heroes momentarily stopped it before it took Earth-1, by the end of Episode 3, every Earth and everyone except for the paragons (and Lex) had been destroyed.
Katie Yu/The CW
Earth-90 Barry took Earth-1 Barry’s place
The Anti-Monitor used Earth-90 Barry’s speed to build his anti-matter cannon and his test of it destroyed Earth-2. When Team Flash found him running on a treadmill, this Barry revealed the Anti-Monitor designed it so that if he stopped, all remaining Earths would be destroyed. They figured out that by reversing the treadmill’s directional velocity, they could destroy the anti-matter wave and machine, and Earth-1 Barry thought the time had come for the Flash to vanish. He was right — but Earth-90 Barry took his place.
Oliver died and became something else
In the first hour, Oliver sacrificed himself and saved billions from Earth-38 in the process. While Mia and Sara brought his body back using a Lazarus Pit, they had to enlist Constantine to save his soul. However, when Mia, Diggle, and Constantine traveled to purgatory to do just that, Oliver accepted a different path. Jim Corrigan, the Spectre, told Oliver it was his turn to serve “a higher purpose” to “light the spark” and “save everyone.”
The epic "Crisis on Infinite Earths" crossover concludes with Arrow and Legends of Tomorrow's episodes on Tuesday, January 14, and if you've forgotten any of the key details from the first three episodes, we have you covered. After all, they aired nearly a month ago.
The Arrowverse had been building up to the event for years — just think about that newspaper headline on The Flash — and it's almost time to see just how much is changed when it's all over.