Enter Lame Doctor Blake:
This first volume in the Essential Thor series collects issues 83-112, or at least the Thor stories, of Journey into Mystery, an anthology series of early Marvel. Like the early stories of most Marvel characters, its awkward and not what you would expect from their current reputations. In this instance, Thor spends a surprising amount of time fighting gangsters, communists, aliens, and normal supervillains. And then there is the secret identity aspect.
Yes, Thor has a secret identity. Before he was the Prince of Asgard, our hero was "lame Doctor Blake," the comic insists on describing him as such at every opportunity, a normal medical doctor who discovered a stick in a cave. The stick happened to be the hammer of Thor, never referred to as Mjolnir at this point, in a disguised form. When lame Doctor Blake strikes it against the ground he transforms Shazam-style and gains all the powers of the God of Thunder.
This lead to a lot of confusion. At least for me, the reader. As early as Thor's third Marvel appearance (Journey into Mystery #85) the demigod is encountering other deities from Asgard, all of whom acknowledge him as The God of Thunder. Not a human who has stolen his powers and face, but Thor proper. And he seems to possess all of Thor's memories too! Now I am well aware of the later retcons that explain the Blake-Thor situation, but it is never addressed in this volume and I have no idea how fans were supposed to interpret their relationship at the time. Suffice it to say, it bothers me.
Thor has a smaller supporting cast than many of his contemporary heroes. Mainly in this volume we have Doctor Blake's nurse Jane Foster, who falls victim to same over-the-top sexism every love interest did in this era, and a few Norse gods. The most important of those gods are Odin, who alternates between loving Thor unconditionally and punishing him with near lethal situations for the severe crime as caring about a human woman, and Balder, Thor's brother who doesn't get much of a personality besides supporting Thor. The Warrior's Three also appear, but mainly in...
Tales of Asgard. This is a section that begins in Journey... #97. These are five pages sorts that cap off every issue for the rest of the volume and going into volume 2. They are one of people's favorite aspects of this iteration of the character. I won't lie reader, I'm not a fan of these. Most of them are retelling of original Norse myths. But of course the actually myths wouldn't make it through Comics Code Authority guidelines, so they have to be dumbed down and morally simplified so the Norse gods are always chivalrous heroes and their foes are cardboard cut out villains. It's boring and a disservice to the actual legends. Plus many of them involve Thor as a young boy, which only exacerbates my confusion about how the whole Blake-Thor thing is supposed to work.
The other problem with Tales of Asgard is the length. These Tales are super short, so after the first several gave cliff notes versions of actual myths Stan the Man decided to start serializing them. These drawn stories would meander, last way too long, and basically never go anywhere. Honestly I have nothing good to say about Tales of Asgard, so lets move on.
The villains of this book are pretty interesting. Of course the headliner is Loki, Thor's evil step-brother, as the book chooses to identify him. He first appears in #85 and is a mainstay from then on. He appears or is at least referenced in more issues than not. In some later adventures, even if he isn't involved in the story the comic will still take time out to identify where he is and what he's doing at the time. Loki is fine. He's not the tortured, complex antihero he is modern Marvel comics or TV. He's just a sinister and conniving trickster. Not particularly interesting, but the book doesn't need him to be much other than a constant thorn in Asgard's collective side. But by estimation, Loki isn't even the main antagonist of this volume.
No, I'd say that honor goes to Mr. Hyde. Calvin Zebo is an evil scientist with a grudge against Doctor Blake who uses a potion to change his appearance and give himself the strength of twelve men. That doesn't make him a match for Thor, but he doesn't usually fight alone. He most frequently partners with the Human Cobra, a man who was bitten by a radioactive cobra! (God I love the Silver Age.) On top of giving him all the powers of a cobra (???) he also has a range of cobra themed weaponry and gadgets, which seem to have appeared from thing air after he was bitten.
(this is kinda immaterial, but Hyde's debut in Journey #99 happens to have my favorite moment of Silver Age sexism in the Marvel canon. I recommend you read it just for that.)
Hyde appears in far fewer issues than Loki. He appears in a total of six issues, all of them two-parters meaning he is actually the antagonist of only three stories. But all of these instances are intense and mark moments of high drama for Thor as a hero. The penultimate issue of this volume features Thor against Hyde in a one-on-one, hammer-less knock-down drag-out brawl that might be one of my favorite fights in Essential Marvel thus far. Even with the Silver Age corniness, its a brilliant rivalry to behold.
Aside from those high points, Thor rogues gallery is consistently inconsistent. You have Enchatress and the Executioner, who will continue to be major Asgardian threats up to the present day. Grey Gargoyle, a human with the power to turn any object or person into stone for one hour with a touch, is introduced. Other than that though, you have Zardok the Tomorrow Man, who stole Kang's schtick before Kang existed, an evil swami, Merlin, who is actually an ancient mutant, several equally forgettable alien invaders, China's Radioactive Man, a communist dictator, a gangster, a robot duplicate of Thor, Surtur the fire demon and Ymir King of the Frost Giants (who show up at the same time to present the largest scale battle in Marvel pre-Galactus), and a cross-over appearance by Magneto.
Overall, I think early Thor is a decent curiosity to long time Marvel fans. He doesn't have the mythological trapping Thor fans tend to gravitate to, but personally I might like him better this way. I'm a sucker for secret identity drama, and having him fight more human villains puts emphasis on how bizarre it is to have a Norse war god living as a superhero in the first place, much less in the "aw shucks" era of the CCA.