Stephen Amell tweeted that Colin Donnell (Tommy) worked at his day job, hopped on a plane, flew to Vancouver, did this scene and flew back the same day to reach his normal work on time. He went through a lot of trouble that he wasn't obligated to do, but he did it because he really cared about the show. It's just amazing how actors can put in extra effort to make the content extra special for us.

"Just a quick reminder, super speed, I don't have it" Give it a year Ollie

they went full on steve/bucky with that tommy reveal.

RIP Diggle's 122 episode appearance streak

Oliver as the villain for this crossover is awesome. It really shows how imposing he is even without powers. Loved the kryptonite Arrow.

"this is all you need for the trailer" funny enough, it mostly what we did get for the teaser.

Oliver has had to watch Tommy die twice now

I loved the crossover. It was better than last year imo, the villains were great, the banter was on point, the cast mixing was great, the stakes were there, they had better use of less important characters, introduced new characters and brought back some old ones, and the action was spot on. Plus that new intro is TIGHT!

Kara is from Earth-38... as in 1938 (the year that Superman first appeared). [H.R. Wells was from Earth-19]

I do love Eric's carney cry is a turkey sound.

You know what I really enjoyed this 4 hour movie crossover more than Justice League. I think spending so many years and hours with these characters makes these crossover/team up episodes so much more rewarding and fulfilling to watch.

Now that Crisis on Infinite Earths is going on, I decided to come back and re-watch people's reactions to Earth X again. I remember laughing my ass off so hard at Ollie's "Super speed: I don't have it" line XD

53 Kara's in 53 universes not all on earth most of them are probably living happily on krypton

What a coincidence! Melony and Aaron are wearing the symbol of their favorite heroes, who are also married in the crossover lol

Eobard Thawn teasmed up with the Nazis in Legends Season 2 Episode 1 or 2! So there's proof he would work with Nazis.

"I can't believe he's back." Really? Cause I can, or did seeing his time remnants as well as Savitar and Kadabra saying pretty much that he's still around let alone the fact that the news article Iris writes since season 1 is still the same not give you any indication that you will never be rid of him? To quote Thawne himself: "The YOU I know from the future, he's not this stupid." I wonder if Sara and the rest of the Legends have or are going to mention there battles with Eobard and his legion of doom when Leo-X shows up? "I'm gonna cry." Not yet.

Remember Thawne and Darke already teamed up with Nazis on Legends when they tried to give them a nuclear weapon.

"Someone gonna die" says Melanie At the time of recording, you have no idea...........................

About who could have been the villains from Earth-X, I thought it would have been very cool to get... not evil twins, but evil parents. Old generation vs new generation. Reverse-Flash played by John Wesley Shipp, Overgirl played by Erica Durance, and Dark Arrow played by Jamey Sheridan (Robert Queen). Oliver, Barry and Kara. All of them lost their parents... and now, they would have to get rid of them. AGAIN. Personally, I think that would have got a much stronger impact on our heroes than their evil dopplegängers.

The solar radiation overdoes that's killing Kara was borrowed from All-Star Superman. While Superman was being killed by it, it had the side effect of making him resistant to kryptonite, so maybe that's what happened here.

Well Supergirl can fly and go straight to the point, Flash has to run and dodge away from the cars and buildings, that's why she arrived first!

10:13 YOU JUST HAD TO SAY IT

You guys are awesome but you have had me waiting for hours!!!

guys our kara is from earth-38. that was confirmed on the flash episode of the crossover last year.

I like the fact that there's a 53rd Earth, and that it's kept secret or ignored because it's so terrible. Kind of reminds me of Sector 3601 from the Green Lantern books.

team arrow against evil arrow was like when they were fighting oliver when they were recruited they just needed to work as a team

In all star superman he had solar radiation poisoning and kryptonite didn't effect superman as much

Oliver went full on spider-man!

love rewatching your reactions!!

They really nailed the KZ (Prison Camp). It look pretty much like they do in real. When I was in school we visited one in Dachau and I just cried.

Been so excited for this!!

"The wolf is made by moonlight. It needs moonlight." "You're 75% water, you can still drown!"

For the Kryptonite part. That was in Batman vs Superman. And the only reason why it was being breathed in, was because Batman made it so that's how it'd get into him. So it went into his mouth and nose and started breathe it in. And when Superman was around the Kryptonite spear, he was weak from being around it. Which is why Lois had to pull him out of the water and throw it away.

Could be that evil Kara's over-exposure to the sun, while it's killing her it also gives her minor resistance to kryptonite so it wasn't VISIBLY affecting her but still weakened her enough to pierce her skin.

I clicked so fast! Another person faster than the Flash😂

This was such a good crossover!! Plus Supergirl is from earth 38 btw. Also they bought out a dvd special for last years crossover so they might do it for this one

Thank you, I did not want to go to sleep

I just woke up and thought I would see IF there was a new post but thought, "4am...doubt it." And I was right! For 11 minutes!

Evil Oliver's name is Dark Arrow and evil kara's name is Overgirl

Fun fact: Barry was meant to play evil flash to make him feel like he can’t escape the feeling that he will go bad but they opted out and went with RF instead

I'm sort of confused if Star labs is fixed now or not because in episode 1 of season 4 they used 2 different aerial shots. One with it fixed, one with it broken.

7:25 because she can travel as the crow flies.

Metallo was also in superboy tv show remember watching it online

Awesome crossover before Agents of SHIELD... what a great week.

The doppelganger switch Aaron is talking about is from teen titans, I think

Seeing Oliver riding in behind them reminds me of you guys watching Supergirl 1x18 seeing Flash and Supergirl together and Aaron wondering what Oliver would do...

I think this the final version of reverse flash from the future after their final battle in his mom's house that's why he's so sadistic and knows everything.. it would also explain why he's so much faster

I wasn't really on board with the Oliver and Felicity thing, it didnt ruin the crossover at all, but we've heard this "I love you, but I don't want to make it official becuase I'm scared of losing you." storyline before a thousand times, but I did love the Stein and Jax storyline.

I love it and the video didn’t start yet

1:04:57 The priest in Crisis on Earth-X, Part 1 was played by William Katt of The Greatest American Hero. P.S. Kara's Earth is Earth-38, not H.R.'s Earth-19.

Wouldn't it be SUPER cool that our actual Kara became Powergirl after her universe was destroyed AND she moved to earth-1 to teach her own teen-self just arrived from the phantom zone as the new supergirl? How great could that dynamic be? Kara mentoring herself and the duo Powergirl-Supergirl, adult and teenager. Hell, that could be a whole season of Supergirl on its own.

reverse flash did come back to kill barry, he said on the season 1 finale that it was never his intention to kill nora but he was angry that future barry took younger barry and he wanted to hurt him

14:25 I hope you noticed the historical accuracy in the camp. The prisoners have the same clothing like in the real concentration camps back in the Nazi days in Germany. In the next crossover ep, but they also showed one triangle in pink and explained it (in the correct way). (Idk how much knowledge in the US exists about this. (I'm from Germany.))

Blind wave u guys will be happy in the part 3 and 4

I think Felicity used information from Helix last year to free Diggle? I can't recall stroyline exactly but he was freed or whatever.

Synthetic Kryptonite? Also I believe Supergirl is from Earth 38 (it was stated in one of the other crossovers I think).

This reverse flash is the one from season 1that "died" The reverse flash that was in legends was a paradox created by flashpoint

Not to spoil you guys, but the fuhrer identity was revealed in the first episode of the crossover.

The dude with run Barry run shirt on obviously loves reverse flash more than any other villain

how awesome is it that "The Greatest American Hero" was the priest at Iris and Barry's wedding.

dont end, start!

Part 3 and 4 where are they :(((( im dying I can’t wait any longer. Eric is gonna be so fucking hype about a certain character

I like to believe that they are wearing green, red, and blue, for the three starter pokemon.

13:38 Super villain landing

I remember the supergirl supergirl and flash crossover you were like how is Oliver supposed to do when they are running

RIP actual reverse flash actor

Love the way they imitate the canary cry xD BLAHLAHLAHLAH

Get a box of tissues ready for the next two.

Not fails, I wish it fully SUCCEEDS!

Posting at 1 in the morning? Fuck yeah! who needs sleep!!

Blind Wave The Kara on every earth theory could actually have a somewhat simple answer. If you recall the end of Season 2 and throughout Season 3 of Flash, we saw John Wesley Shipp played as both Jay Garrick of Earth 3 and Henry Allen of Earth 1. Therefor there could be another Kara, she just has a different name like John Wesley Shipp did.

I know they don’t read comments, but just so you know Reverse Flash here is Pre-Legends, Post flash season 1. He has no memory of the legends, it’s the Eobard Thawne from season one after they “killed” him. “Time travel, it - it’s confusing, Barry. I feel like I’m always explaining this to you.”

Read All-Star Superman by Grant Morrison. This explains the solar saturation of Supergirl’s cells

I think Kara on earth 1 is still in stasis and the Superman in earth 1 could still be doing things like in smallviille

The arrow could have been made of very little kryptonite or a coating of kryptonite and that is why it did not effect her much when she caught it

Just a quick question of earth 1 doesn't have superman or Supergirl as any kryptonion on their planet how did they got kryptonite

24:33 she’s from Earth-37. Travelling to and from Earth-19 is illegal.

after this crossover *james bamford* is now a television god in my book!!

Oliver shooting krypton Arrow is reference to Return of dark knight of Frank Miller

I WAS ABOUT TO GO TO SLEEP TY GOD

They always said their was infinite earths. I dont know where you got 52 earths from.

Epic Crossover Battle: *Dc's Crisis on Earth X* vs. *Marvel's The Defenders* ...who won, you choose?!?

Firestorm used his ability to transmute something into kryptonite.

Kara gave someone from this earth kryptonite idk who but it was last crossover

I repeat Cisco was NOT in a coma!He was KNOCKED out!

Welles said there were 53 KRYPTONS he said nothing about any survivors of that planet on any given world. But the producers have said there is an Earth 1 Kara which would be our "Power Girl"

The Tommy reveal! YESSSSSSSSS!

1:11 shittttttttt gonna love this

4:26 Cheers mates!

Okay one criticism... it has already been established in flash, arrow, and supergirl that there are infinite earths. Not just 53? So that makes no sense why they would limit that at 53 earths and treat it as fact. Anybody else notice that?? Everything else I loved, it's just they ignored that there are infinite earths

Lol they read my comment ,thanks guys

He did go back to kill 7 year old Barry originally but he fail becasue other Flash stop him and then he killed his mother.

there has to be a kryption on earth one they might be in the phatmon zone or dead

For the record, Eobard Thawn did help the Nazi's in the Season Premiere of Legends of Tomorrow

Oh if he's crying already....

Mick is a retired time bounty hunter....he likes sammiches which mustard :)

Looks like Oliver will finally have super speed in this upcoming crossover.

22:16 That's Young Justice

Firestorm can create kryptonite. So that could be who Oliver got the kryptonite from. I don’t know how anyone on Earth 1 even knows about kryptonite in the first place, though.

Am I the only one that was like WTF when they revealed that the yellow speedster was Thawne lol