"Who ever said he was the only Abyssalis King?"

No one, strange voice able to communicate with the narrator. Wait: triangle. That's Germain and Gaelijah, conveniently as Atropos' cube starts pulsating and directly after the energy from the fight resulted in their release as they troll and even predicted he'd get karma for beign able to escape before they did..yeah these two are not on the best terms. Gigist wants or believes he can understand humans, Germain thinks they want to be dominated (phrasing) and be pushed down the right path, and Gaelijah not even thinking they have a desire to be understood, you decide if they're correct to some degree.

The reveal they're a trinity also kinda fits with the theme of threes: three Riders, three Sisters, and now Three Kings who all share the title, and the fact Geyron was actually a doll this whole time, making them especially dolls of a dolls, and these Kings their grandparents: and they made him on a whim? Guess destruction, gold, and committing mental warfare accidentally got lumped in the mix. One of the main villains closely tied to the central protagonists and the organization was made essentially to get them out while also having his own agenda in the process.

Doll worked a bit too well if you ask.

Even crazier, Germain...ate his own child: so it wasn't Gigist who grabbed Geryon, it was Germain all along: but who made the giant beast. But man the sheer fury on the Sisters faces when they hear while he's outright teasing them. Almost feel kinda bad: their dad sees them as experiments, their grandparents see them as defects they can insult and berate at any and every turn. 

Like no one can blame Clotho for wanting to tear his face in even though he just subjugates him, but them targeting Fuga as the most peskiest of pests: did Fuga actually fight these guys before in the past, or did they use the knowledge gathered from eating Geryon in order to find out he's been basically Batman engineering the heroes from the shadows via his Homunculi (hoping that was spelled right)?

Seems to be the latter since later he never met them or only met Gigist since he knew about the legend from the book.

Speaking of Kamen Riders, finally found the song Houtaro was teaching Hopper1 and Nijigon, the same one he hummed back in episode 1, it's "My Revolution" by Misato Watanabe, which came out in 1986. Specifically:

All: "If you're going to chase your dream,"

Hopper1: "You can't cry so easily."

Nijigon: "That's what you (the subs added Colorfully) taught me."

Houtaro: "My fear, my dreams, now I can run ahead."

Which, crap, everyone talks about What's Your Fire actually fitting the themes of the show, but that those lyrics don't define the journeys behind those three, then not sure what else does.

Oh look, the Association who's done nothing asking for the Chemies back after doing nothing to help. At least the heroes acknowledge the loose ends.

Did not expect Atropos to invite Rinne for a favor, since it ultimately helps the heroes get a leg up on their progress, though how much of this is genuine and how much is also to take advantage of her remains to be seen: the role reversal of them having their dads attacked and Atropos being able to move on after having her father avenged would make sense. The way she frames it though, "perhaps, once he is avenged, I'll at least be able to change." It just feels like she's playing off of Rinne's sympathy. Which wouldn't be the first time.

And hey, Clotho's abuse granted her a new form completely letting down all of her hair. Wonder if and how  she was able to track him down, though it probably relied on a crap ton of temporal warps unless list Gigist she got the power to immediately find and discover targets.

But Fuga's able to do pretty well and human form. Not sure how he was able to get the two Chemies to summon the ones he needs for Wind, but it's possible to make copies of Chemies, he made his own clones, who said he didn't do the same? Or they just came to him from his call and Exceed Fighter helped track them down to get his location.

Also Exceed Fighter, good to see you after the Geats crossover. 

The look on Spanner's face when Houtaro talks about his dreams...Spanner doesn't have any place to go outside of fighting Chemies huh.

And like in some series, alchemist was considered a watered down intimation of their divine abilities and want to get rid of him the most. Even in the three vs one, we see a golem made off inorganic material, Malgams being the intended evolutionary end goal for humans and Chemies, more confirmation of the Philosopher's Stone, and the civil war between Gigist for the throne, Gaelijah wanting for fate, and Clotho being abused so far her mentality has gone too far.

But we finally get the explanation for Fuga's clones: he's been slowly recovering but can't make any more Homunculi while healing: so every time he's been helping the heroes, it's been on limited power: considering he was able to break even with Geryon at full strength, fight the sisters at episode one before losing, gave Rinne her driver through Alchemy in a dream, then was able to fight as WInd using each of them, it's probably the damage that accumulated from each of them made it harder for him to be at full strength.

And it's nice to finally get confirmation Nijigon was created to restore the Philosopher's Stone from it's fragments and entrusted him to Houtarou. The way he shuts down Fuga's affirmation does align with a bit of self guilt: for a ideal world, there'd be no Kamen Riders necessary if all evil was gone, and yeah, society wouldn't just easily accept them as normal. Granted given how they've worked before, having Chemies work on the small scale via helping others or a support friend could work, but they'd have to have proper people behind them.

No, Tamami did not eat Nijigon even though it would be funny to do so. Though where he went, yeah that's definitely on Spanner's end for making him probably leave, leading to Platinum and Rinne to deal with the Golems, though at this point, they might struggle, but they can definitely take them.

Clotho vs Lachesis: good hand to hand choreography and neat to see their dual transformation, even though she wipes the floor with both Valvarad's. It does make sense the beast losing her soul would win with the upgrades, people are too obsessed with wins and losses to get the context. 

Though what sucks even more: Lachesis is actually grateful for Spanner's save, but he frames her as Kyoka's research. There is a study to be had about Spanner's lacking social skills (not blaming Kyoka for trying but every student has their weakness), but he can't see anything that's not a naturally born human as a living person, which sucks too because there's a lot of interpretation of him having a similar origin as a Chemy: born of two powerful creatures in humans, awakened supernatural powers that people have attempted to manipulate in order to turn him into a Malgam.

The heroic second wind Platinum and MoonCerebus Majade get using Appare, Sasuke for ninja clones, Bullet and Stage for a pincer, Catchula and Sabo Needle so hard Germain has to step in for a combo attack for a cliffhanger at least gets the episode to end to see what would happen.

In terms of villain debuts and progressing the story forward, on one hand it establishes Germain as a strong force and Gaelijah as someone dealt with later, finally brings Fuga back to the story and she finally gets to hug her proper father, pushing the Abyss Sisters' plotline even further, and Nijigon's disappearance does add some mystery, though it can be annoying that the reason Gotchard doesn't have access to his final form is for convenience, but this is the show where the gimmicks are alive, and the show's done a good job treating the ones that really matter as such, so can't complain there too much.