With all due respect to the many Legion of Super-Heroes comics I’ve read featuring them over the years (plus the original Invasion! miniseries), the Dominators are pretty lame live-action villains, lacking enough personality or individuality to matter as anything more than a vague but relentless threat to humanity.

This one, on the other hand, was so committed to the concept that each episode didn’t even feature the opening title sequence of the respective series, but a brand-new “Crisis On Earth-X” banner created for the event. And the hours that followed that credits sequence proved that wasn’t window dressing. There were personal subplots from each series — Professor Stein’s desire to quit the Legends and return to his family, Alex trying to get over her break-up with Maggie, Barry and Iris’s wedding, and Felicity’s reluctance to get engaged to Oliver again — but they were spread out across the whole event, rather than compartmentalized within the chapter from their respective shows, and they were also balanced throughout with the threat from Earth-X.

“Invasion!” took an awkward hybrid approach to the crossover. The Supergirl episode had nothing to do with it until the last few minutes, Arrow tried celebrating its 100th episode in mid-crossover, and only Legends did an episode that was full-throatedly about the Dominator invasion.

(*) Peak TV, plus the increasing familiarity of these shows and their styles, has pushed all of them down to intermittent viewing at best for me these days. (Surprisingly, Legends is the one I catch most often, because it’s the most light-hearted and because it’s much less serialized than the others, and thus easier to dip into and out of.) As a comics reader, I mostly hate company-wide crossovers these days because they interfere with ongoing stories in individual series I enjoy, but with the TV versions, it’s the opposite: an easy excuse for me to come back and sample them all at the same time. (For that matter, last year’s crossover is the only reason I gave Legends another chance. So what I’m saying is, crossovers work!)

“Crisis On Earth-X,” on the other hand, was everything a fan could have hoped for, whether they watch all four shows, only one or two, or are just more general DC/superhero fans tuning in out of curiosity(*). It corrected nearly every flaw of “Invasion!” and was packed with memorable moments, big and small.

A parallel Earth where the Nazis won World War II(*), on the other hand, feels both sadly timely given how public and unapologetic white supremacy has become in America over the last few years, and much more personal to all the heroes involved, whether they had evil doppelgangers, were Jewish, queer, non-white, or simply horrified by a world in which these monstrous racial ideals were dominant. In any age, watching superheroes beat up Nazis (going all the way back to the cover of the first Captain America comic) feels satisfying; in this one, it was particularly cathartic. (Felicity to the bad Oliver: “My grandparents didn’t survive the Holocaust so the world could be ruled by Nazis.”)

(*) Earth-X was introduced in a Justice League comic — as a way to incorporate a bunch of old Quality Comics characters that DC had acquired the rights to — that came out the month I was born.

Going with Nazi counterparts of several heroes — plus Reverse-Flash plucked from the timestream and looking like Harrison Wells again(*) — also put a face on our crossover bad guys that the Dominators never had. Legends season two already used up the Legion of Doom idea that would have been the other easy way to make the villains matter, but this worked very effectively, and let Melissa Benoist in particular unleash a side of herself (in a costume that, other than the SS logo on the chestplate, is a big improvement over the traditional outfit with the skirt that our Kara wears into battle) that Supergirl has no room for.

(*) One of the event’s few out-and-out groaners was Barry simply letting Thawne run away at the end. There’s a wide range of options in between “I won’t kill anyone, not even the superpowered serial killer who murdered my mother, and whom I’ve barely defeated in the past” and “just go away and I’ll deal with you later, after you’ve had a chance to hurt many more people.”

Ideally, we would have gotten more Earth-X versions of the combined good guys, if only so the final battle wasn’t mostly just the heroes mowing down wave after wave of anonymous Nazis. But we also got an amusingly good spin on “Leo” Snart, and this was also a much more crowded event than last year, thanks to the increased size of the casts of both Legends and Arrow. Having evil Barry and Kara (plus different versions of Snart, Win, and Quentin Lance) got the point across well enough while still leaving plenty of time to service most of the heroes. Which leads us to…



3. It used everyone roughly equally.

Even when Supergirl joined last year’s crossover, she was still treated largely as an afterthought, perhaps because she was from another Earth, perhaps because she was so powerful that she could too easily solve too many problems. Here, she was prominent throughout, as was her evil counterpart. “Invasion!” also very clearly prioritized Oliver and Barry over everyone else, with the Legends in particular feeling like guest stars in their own episode. To a degree, those two are always going to matter more than everyone else, because Oliver is where this whole fictional universe started, and Barry was the one who proved it could be expanded beyond the confines of Arrow, and they still got the big moment at the end with the double wedding, but nearly everyone else (with the exception of a few Legends and some of the supporting Arrow heroes) wound up feeling like part of one huge team, and got at least one or two moments to shine and show off both their skills and personalities to people who might not watch all the shows. And that’s as it should be.

4. It felt big.

I’m not just talking about the image of a dozen-plus superheroes marching (or flying) together to face the Nazi invaders, nor that impressive oner of everyone’s powers in action under the overpass, but simply the sense that the stakes were so much bigger than what you generally get on the individual shows, or even in “Invasion!” A classic crossover has casualties, and we got a big one here in the death of Martin Stein (whose funeral reminded us of how many lives he’d touched across the different series; Caitlin’s “Tell Ronnie I miss him” hit the hardest). It ideally introduces a memorable new character, which we got in Russell Tovey as The Ray, an Earth-1 expatriate fighting Nazis and dating Leo Snart. And it has huge moments that will reverberate in the ongoing series after. Not only is Jax going to have to find a new way to contribute to the Legends (most likely finding a new Firestorm partner, just like Stein found him after Ronnie died), but both Barry/Iris and Oliver/Felicity are finally married, in a sweet impromptu ceremony officiated by Diggle. (My only real disappointment of the event was the relative lack of Diggle, since the lighter side he shows in the face of superpowers is always a treat, but at least David Ramsey got that great moment at the end.)