[Mesnick]

Wow, what a cool episode! We finally get a real episode dedicated to Spanner and he suffers in it. Oh, how he suffers! Lost, crying, begging for help, and then turning into an embittered, revenge-seeking Malgam. Personally, I think another show would have stretched this story out over two or three episodes, but in this particular case, I don't mind the fast pace at all. This adds drama and tension.
Just as was already suggested in the episode about Bolt, Spanner's memory was also corrected. And, given that this was done in order to prevent the darkness from consuming him, the fate of the above-mentioned Bolt also became clear. Most likely, he simply forgot about his defeat, but remained an alchemist somewhere behind the scenes.
Spanner's relationship with Kyoko is dramatic and beautiful even in its darkest moment.
Hotaro and Rinne are good and act according to their characters. I’ll just note that Rinne feels like a secondary rider and that’s great.
I want to punch Geryon and that's great. A great villain if the show doesn't screw him up in the future. Unhurried but decisive; thoughtful, but completely insane. And how powerful he is! Our heroes can’t even start a battle with him! The villain must be stronger, because only then will the hero develop in order to defeat him.
About Minato. In this episode it is already quite obvious that he is spying on Geryon in order to intervene at the decisive moment. But for some reason it seems to me that Geryon is in the know and is just having fun, or is conducting another experiment. As for Spanner's parents, I think that they would still not be able to remain in the world of the living without negative consequences, and this is another reason for his non-interference. Although the whole scene (even the scenes!) are heartbreaking.
Lachesis does nothing but watches carefully. Interesting.
I also want to note the lore of the show and how the audience is introduced to it. It is extensive, but also coherent and logical. Alchemists vary not only in rank, but also in specialization (this is why Spanner should ideally be a better fighter than Minato). Children clearly have stronger alchemical abilities than adults, as we saw with Houtarou and Spanner. Most likely, this is why Atropos the child is so loved by Geryon. But at the same time, children cannot always control their powers, which leads to trouble and memory erasing is used to protect them and the world. In general, my point is that even if all the laws of this world are not explained to the viewer, these laws are already thought out and logical. Similar problems are solved in the same way. There is no feeling that something was invented five minutes before filming and does not fit in with the rest of the lore. Even resurrections and time travel are explained by the special powers of Chemies, and therefore do not spoil the overall picture. I like it.
P.S. His name really is Spanner! After all, his parents are still jokers.
P.P.S. Also, considering that the actor who plays Geryon is the husband of Mari from Faiz, it seems to me that Kaixa is her type