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"Whosoever holds this hammer, if he be worthy, shall possess the power of... THOR!"
— The original inscription upon the mighty Mjölnir.
The Son of Odin. The God of Thunder. The God with The Hammer.Marvel Comics' version of the Norse God of Thunder. Also one of Marvel's major superhero characters since the 1960s. He first appeared in Journey into Mystery #83 (August, 1962), created by Stan Lee and Jack Kirby. His series was featured regularly there until issue #125 (February, 1966). With issue #126 (March, 1966), the comic was renamed The Mighty Thor.Volume #1 lasted from 1966 to 1996, ending with issue #502 (September, 1996). At that point, Thor was supposedly dead. The series was renamed back to Journey into Mystery and continued featuring the tales of the surviving Asgardians. Until issue #513 (October, 1997), where the Asgardians' tales concluded. They were replaced as series protagonists by a couple of other characters (Master of Kung Fu, Black Widow, Hannibal King). But the comic was canceled with issue #521 (June, 1998). It was cancelled however only to be replaced by The Mighty Thor (vol. 2), which lasted for 85 issues (July, 1998-December, 2004). The series ended with the supposed death of Thor and most of the Asgardians. The series remained in hiatus for a few years, then was revived as simply Thor in 2007. It has been renamed and renumbered a couple of times since (current volume is titled Thor: God of Thunder), but otherwise it is still the familiar tale of the immortal hero and his extensive supporting cast.Originally, Thor was supposed to be one Dr. Donald Blake, a handicapped physician; he had a injured leg and required a walking stick. While Blake was visiting Norway, an Alien Invasion drove him to hide in a cave, where he found a wooden stick; when he struck it on the ground, it transformed into Thor's magic hammer, Mjölnir, and Blake found himself changed into Thor! Using his new powers, Blake defeated the invaders and decided to become a superhero in his native New York City, keeping the secret even from his love interest, Nurse Jane Foster. It turns out, however, that Blake really was Thor, having been given amnesia and a new form by his father, Odin, the ruler of the Asgardian gods, to "teach him humility" (it was revealed years later that this was actually part of a Gambit Roulette of Odin). After learning the truth of his identity, Thor decided to stay on Earth (where he even co-founded The Avengers) and continued romancing Jane, much to Odin's displeasure. Thor's half-brother, Loki, became his Arch-Enemy and created many of Thor's other foes.Eventually, Thor and Jane broke up, and he started a relationship instead with Lady Sif, who in the original myths was Thor's wife. Incidentally, the differences between Marvel's version and the actual myths were eventually explained by stating that Ragnarok (the final battle in which the gods would be killed) was a cyclical event that recreated the gods every two thousand years or so, and the current Asgardians were only the latest version. This also explains the existence of many deities invented for the series, such as The Enchantress and her minion, The Executioner. Odin's schemes were mostly a way to prevent Ragnarok from happening (again).Eventually, Thor abandoned his Dr. Blake identity (who may or may not have been an actual person - it's confusing) and even was replaced temporarily by other heroes such as Beta Ray Bill and Thunderstrike. After Odin was Killed Off for Real, Thor gained his powers and responsibilities. He finally managed to end the Ragnarok cycle, though all of Asgard was destroyed in the process. In 2007, Thor returned and re-created Asgard (and revived its people) in the middle of the United States, on land he legally bought! But Loki also returned, badder than ever (first as a woman, then his regular male form and after a rebirth currently a AdorkableCreepy Child ), and set on making life miserable for Thor once again. Thor has now returned to the brand-new Avengers lineup.With 2011's Fear Itself event, he died again but came back to life, but now Asgard is called Asgardia and under the leadership of Freyja, Idunn and Gaea. Loki, reborn as a teenager and who genuinely cares for Thor, strives to be good but due to not having strength like other Asgardians, relies heavily on his intelligence, deceptions and is more than willing to capitalize on his past reputation to get what he wants.In the Ultimate Marvel Universe, Thor is still a Messianic Archetype, but his godhood is put in question. Through the efforts of Loki, Thor's words are twisted and not taken very seriously.Thor has been animated several times, though rarely on his own and primarly instead with the Avengers or other Marvel heroes: The Marvel Super Heroes, The Superhero Squad Show, The Avengers: Earth's Mightiest Heroes, its Spiritual SuccessorAvengers Assemble, and Marvel Disk Wars: The Avengers; plus his Ultimate version in Ultimate Avengers. He's also one of the Hulk's two major opponents in Hulk Vs. (the other being Wolverine), and finally got his own feature with Thor Tales Of Asgard.An extremely altered version of Thor appeared in the 1988 TV movie The Incredible Hulk Returns.Thor is also a character in the Marvel Cinematic Universe, portrayed by Chris Hemsworth and appearing in his eponymous movie in 2011 and in The Avengers in 2012. A sequel to Thor called Thor: The Dark World was released in 2013, and the character would return in 2015's The Avengers: Age of Ultron. The character is slated to appear in 2017's Thor: Ragnarok, but it is unknown if he will appear in either part of Avengers: Infinity War or any other film.Thor, Sif, Valkyrie, Heimdall, Loki and the Warriors Three also show up as playable heroes in the 2012 Facebook game Marvel Avengers Alliance, while Loki, the Enchantress, the Executioner, and the Wrecking Crew are among the villains.
Achilles' Heel: During the comic's older runs, if Thor was separated from Mjolnir for more than sixty seconds, he would turn into his human guise Donald Blake and Mjolnir would turn into his walking stick. Reversing the effect requires Thor to pick up the stick. This has since been removed, basically giving Thor no glaring weaknesses.
In terms of power level, Thor was created to be Marvel's main equivalent to Superman. They decided not to make him a man, but make him a god. Older stories had Thor using Super Breath and even Super Ventriloquism, making the comparison all the more obvious. By the way, JLA/Avengers has the answer of who'd win in a fight between the two: Superman, but he'd be so exhausted by the end of it that he wouldn't have much fight left to take on anybody who jumped him immediately after. However, it should be noted that Superman himself says that Thor was about to kill him, and the he simply got lucky with his last hit. Basically, they're tied.
When Thor first adopted the alias of Sigurd Jarlson, he literally bumped into a man who looked exactly like Clark Kent - quite intentionally, since his own 'disguise' consisted of changing his hairstyle and putting on glasses. The Kent-expy was also used to lampshade the situation: "Hey, he looks just like... no, it couldn't be."
Always Someone Better: Technically, "Always Someone More Worthy"; this was the entire reason Beta Ray Bill was created. The writers wanted to explore the idea that there was another person out there who was an even more worthy wielder of Mjölnir than Thor himself. Bill defeated Thor in single combat to claim the hammer, and even saved Thor's life because he was a Worthy Opponent. Odin was so damn impressed that he copied Mjölnir into an equally-powerful hammer called Stormbreaker. Walt has stated that Bill was created to counter all the people he thought would not have qualified to wield the hammer, since in the eyes of a Viking, only a savage killer should have been "worthy".
Skurge may have a cold personality (and even that is debatable), but he is not an ice giant. Ice giants, on the other hand, are ice giants. Although they look like large humans, they actually get smaller when exposed to great heat. Then there are the ice giants who actually look like moving ice sculptures, like smaller versions of Ymir himself.
Animal Superheroes: Puddlegulp, the frog that Thor befriended when he himself was turned into a frog, has recently became Throg using a sliver of Mjölnir in the Pet Avengers crossover.
Animal-Themed Superbeing: The High Evolutionary was fond of making these due to his studies in genetics. One of the more famous being the Mongoose who was so fast, Thor (Thunderstrike version) had to call in Spider-Man for help.
Arch-Enemy: If there's trouble in Asgard, Loki is behind it 9 times out of 10.
Ascended Extra: In the original myths, there's almost no mention of Laufey other than to mention that she's Loki's mother. To flesh Loki out as a character, this adaptation makes her a him, the King of the Frost Giants who was killed by Odin.
Attack Reflector: Mjölnir can reflect attacks in this manner, sometimes amplifying the return volley 10 to 100 fold.
There's also a What If issue that reveals what would have happened if Jane Foster had been the one to find the walking stick, instead of Donald Blake. Essentially, she becomes Thor's Distaff Counterpart.
The Earth X series had Thor transformed into a woman before the start of the story as another attempt to teach him humility.
Aww, Look! They Really Do Love Each Other: Some writers will make it clear that, beneath all the betrayal and rivalry, Thor and Loki love each other. This is especially obvious during Siege and its aftermath, and Matt Fraction has stated that this is the approach he's taking during his run.
Badass Beard: Odin, many others in Asgard. Thor himself was clean-shaven for many years, before growing a beard during the Walt Simonson run (with Lampshade Hanging about how this made him slightly more like the Thor of legend) to cover the damage his face sustained in a battle with the death goddess Hela. Thor also sports one in the Marvel Cinematic Universe.
During Jason Aaron's run the Thor of the future sports one on par with Odin's. After meeting present Thor he continuously encourages him to grow one.
Bad Ass Boast: This one springs to mind: "All the power of the storm, from all the world, flows through my veins, and can be summoned by mine hammer at any time, wherever it is. A lightning storm in Japan? Mine. A hurricane off the coast of Barbados? Mine again. A brace of tornadoes in Kansas? Aye... mine. All that might, all that destructive force, mine to command. Channeled and guided through the mystic might of this hammer, guided right at thee!" note Source: CAPTAIN MARVEL vol. 4, #17.
Desak the God-Slayer had a nice one... when the forces of Asgard raced at him, heaving swords and shields, and shouting their famous battlecry "For Odin! For Asgaaaard!!" he responded "For NOTHING!" as he blew them away.
In Fear Itself Thor faces off against the Hulk and the Thing, both of whom now wield Asgardian hammers. After savagely beating down the Thing, Thor turns to the Hulk and says "...And him I liked. But you? You were always a giant pain in the ass." Of course, he also said: "I can't beat you, you know. And I never could." Hulk's answer: "I knew." (Although Thor manages to hit Hulk so far that he was removed from the battlefield, but collapses unconscious afterwards.)
Badass Normal: In a world populated by supernatural creatures all far more powerful than your average human every once in a while through brains, training, or just pure grit holds their own or triumphs. A prime example is Roger Willis who held his own against Dark Elves and Fire Demons in Walt Simonson's run.
Baleful Polymorph: The memorable storyline, beginning in Thor #363, where Thor is turned into a frog.
Bare-Fisted Monk: Although they're probably not as effective as Mjölnir, Thor is quite willing to use his bare fists against an enemy. He did this to very nearly defeat The Juggernaut while he was using Mjölnir to neutralize Juggy's defensive powers.
And then there was his second battle with Mister Hyde. Thor got so pissed off that he deliberately dropped Mjolnir and went after Hyde with his bare hands, stating that if he couldn't beat Hyde within sixty seconds, he didn't deserve Mjolnir's power. A Curb-Stomp Battle ensued.
Odin: FOR ASGARD! Thor: FOR MIDGARD! Loki: FOR MYSELF!
Beyond the Impossible: Nothing can stop the Juggernaut once he begins moving in one direction, right? WRONG!◊ Justified, as Juggernaut is empowered by a god. Remember what Thor is.
BFS: The Odinsword and the Twilight Sword; the latter in particular is about 500 foot long.
Big Applesauce: Given that NYC is the main setting of the Marvel Universe, it shouldn't be a surprise that this runs through this book like almost all others; however, special note should be taken of the famous run of Walt Simonson; after an epic cross-dimensional battle left much of Asgard in ruins and the dimensional bridge broken, the Asgardians were forced to stay in New York for several months (real world time; roughly a month or so comicbook time). With no battles to fight, they acted like tourists, seeing the sights, besting all comers in drinking contests and bar brawls, and collecting mortal weaponry and knickknacks to take back home (Volstagg in particular could be seen wearing an "I [Heart] NY" shirt for months afterward). You could tell that Simonson really loved New York City.
Big Damn Heroes: Scuttlebutt, Beta Ray Bill's ship, does this for Sif as she is fighting an endless horde of demons in #340.
Big "NO!": When Jane Foster is killed (don't worry, she gets better) in Thor #371, Thor spends an entire page smashing stuff up while shouting "NO!". He ends up kneeling in the wreckage, saying one final, very small, "No."
Blood Knight: Malekith the Accursed in his most recent arc made an attempt to slaughter as many Dark Elves as he could with his own personal army, never stopping to rest unless the situation is inconvenient for him.
It comes with being from Asgard. Thor himself, while more reserved than his fellow Asgardians, is downright hammy when compared to his fellow Avengers, as demonstrated in Marvel Ultimate Alliance: "SOULLESS MACHINE!!! HOW DARE YOU STRIKE THE SON OF ODIN?!?!"
Brainwashed and Crazy: Thor, the Warriors Three, and the Executioner have all fallen victim at one point.
Kid-Loki. His popularity is insane for only having existed since early 2011. It's probably all the one-liners.
There was a collective fandom freak-out over the "Mystery Solved" ads for October 2012, until later ads confirmed Kid Loki will still be around after the Vanir-War event and not back to his older, eviler self. He's insanely popular.
He will be in Young Avengers, which many are happy about. Because it may mean that he will be out of Asgard and away from all the mean Aesir. Sadly, none of this happens in a way you would suspect...
The Butcher: Gorr the God Butcher, who is introduced as a new antagonist in current Jason Aaron's run.
Cain and Abel: Thor and Loki, though in the case it's Loki, the younger of the two, who is the villain.
Calling the Old Man Out: More then one story arc has ended with Thor calling Odin out for being a dick. Most notably the "Blood and Thunder" crossover where Thor is driven insane by all the crap Odin has put him through.
Subverted in Fear Itself. While Odin is being astonishingly dickish even by Odin standards, and Thor is right to call him on it, it turns out that Odin's main motive is saving Thor's life. He fails. (Temporarily, of course.)
City of Weirdos: During Walt Simonson's run there was a story arc where the hosts of Asgard were trapped on Earth for a few weeks, and spent the time hanging out in New York City.
Narrator: ...and New York being what it is, almost nobody notices.
Under that prespective, one could also count Broxton, OK.
Clone Jesus: During the Civil War, people attempted to clone Thor since he had a not-so-convenient disappearance through that arc. Issue #610 has Thor confronting his nuttydoppelganger, Ragnarok.
Combat Compliment: Thor will praise his opponent in battle, especially if they demonstrate great physical strength.
The Commies Made Me Do It: Thor #358 features a Soviet plot to destroy the USA's economy; one of the key players is an immigrant who's being blackmailed into helping for the sake of his parents who are still in Soviet hands.
Cool Helmet: Plenty to go around in Asgard, especially Loki's.
Costume Copycat: Several other people have wielded Mjölnir when Thor was indisposed, including Beta Ray Bill and Eric Masterson. Eric even grew longer hair and a beard when he transformed, to the point where he actually looked very similar but not identical to the thunder god. This was Lampshaded by the Absorbing Man when he got a good look at Eric up close.
Cut Lex Luthor a Check: One of the earliest Stan Lee-written stories featured a scientist who invented a device that could duplicate matter, essentially creating the duplicate out of nothing. Having achieved what's arguably the most amazing scientific discovery in human history, what does he do with it? He... creates an evil twin of Thor and sends him after the real one.
Mister Hyde is another example. Along with his Super Strength formula, he's also invented a "Time Reversal Ray" that shows events that occurred in the past of whatever he points it at. What could have been used for everything from police investigations to historical research is instead simply used by Hyde to track down Thor so he could indulge his petty grudge. Yeesh...
Dating Catwoman: The Enchantress, a goddess of Asgard, spent years hatching plans to harass and seduce the god of thunder. He eventually relented and had a brief romantic relationship with her.
Balder and Karnilla also have one of these relationships. They actually hooked up for a while during Walt Simonson's run.
Deflector Shields: Thor can create "dimension disruptions" with his hammer to protect himself or his allies. In Journey into Mystery #112, he created a disruption around himself that was "impossible for the Hulk to break through."
Determinator: Thor even when his power has been halved. The earliest, and maybe coolest, was during an epic battle with Hercules back in the 60s. Odin was pissed at Thor for something and cut his power in half; despite that Thor kept battling until he was finally knocked out, but man it was awesome!
Deus Exit Machina: Thor, during the Civil War Event. It seemed that halfway through he had taken a side, but it was just a clone. Yes, Tony Stark cloned a god. Issue #609 had Thor and the clone, Ragnarok, duke it out.
In 616, there's Thor Girl. An issue of What If? also speculated on what would happen if Jane Foster found Mjölnir instead of Don Blake. Predictably, it turns her into a female version of Thor.
Marvel is rolling out a new incarnation of Thor, a female one, to permanently replace the original male version. They specify that she is not "She-Thor, Lady Thor, Thorita" or anything like that, just plain Thor." (though a different Thor from the one we know and love, not simply Thor turned into a woman)
Dramatic Irony: After Loki's original treacherous self spent decades trying (and failing) to kill Thor, his younger innocent self is the one who succeeds. While trying to help Thor. The magpie Ikol notes the irony.
Drop the Hammer: Thor's most effective battle tactic is to introduce his foes to Mjölnir, one of the most powerful weapons in the universe.
The Dreaded: Its very rare considering their power and courage, but a few villains have this effect on all of Asgard including Odin and Thor. Two in particular are Surtur, a fire giant rivaling Odin in power destined to burn the entire universe and the Disir, the Asgardian equivalent of the boogeymen who are pretty much immune to all but very specific magic and weapons (including Thor's hammer) and merely saying their name can cause them to appear and kill you. Ego the Living Planet is one of the few villains not related to Norse Mythology that intimidates Thor. Even a god has trouble fighting an entire world. Another example is the Mangog, who habitually beat the living daylights out of the thunderer and just refuses to go away - "so long as hate endures, I exist". When Desak, the God-Slayer who had destroyed several pantheons throughout the universe, came upon Asgard, the Asgardian troops were practically shaking in their boots, and, as it turns out, rightly so. And there is the Destroyer, of course. Recently, The Serpent has added himself among this list quite nicely.
Elemental Powers: Innate, but can also be granted through possession of Mjölnir.
Lightning - Thor can summon lightning from the sky, channel it through Mjölnir, or even project it from his hands. According to Thor #421, the God of Thunder can amplify the power of lightning 10,000 fold. Thor can also use lightning to create electromagnetic pulses capable of disabling Iron Man's armor.
Wind - Thor can use Mjölnir to generate powerful whirlwinds. In Thor #177, he generated a "spear of wind" powerful enough to push back Surtur, the 1000-foot tall Fire Giant. These whirlwinds can also be used for containment, as was the case in Secret Invasion #8 when he isolated the Wasp, who had been turned into a biological weapon. Although it didn't happen in his own comic, Thor once used Mjölnir to control the winds and spread a chemical agent developed by Spider-Manthroughout the global atmosphere to neutralize another chemical agent released by Doctor Octopus that was destroying the ozone layer. Thor can also utilize his breath and exhale with the force of a hurricane which can close dimensional openings, as seen in ''Journey into Mystery'' #86.◊
Fire: Mjölnir can emit fire blasts hot enough to melt steel. Thor has also created expanding waves of fire and used Mjölnir to absorb fire attacks. The God of Thunder also has a natural resistance to heat, as he can be submerged up to the neck in lava with no ill effects.
Earth: As the son of Gaea herself, Thor had the ability to control this to a degree. He can start earthquakes in two ways: physically slamming Mjölnir to the ground or by summoning lightning bolts while in flight. He has demonstrated enough control to generate unidirectional shockwaves that can be aimed at a single opponent.
Empathic Weapon: Mjölnir. It's not how strong you are, it's how worthy you are. The Hulk and Juggernaut have both tried with all their might to budge it and cannot lift it. However, Captain America can lift it easily. Times it has been mistaken to be lifted by the non-worthy include alternate realities/versions where the enchantment did not apply, fake duplicates, or machines that have no worthiness to measure like robots.
Endless Winter: The "Cask of Winters"/"Cask of Ancient Winters" is used to create this effect by several enemies of Asgard, especially Malekith "the Accursed". Probably inspired by the Fimbulvinter.
It is outright said to contain the Fimbulvetr itself at times, though other times it is said to contain the endless winter that was the entirety of reality before warmth existed. Surtur implies that the contents of the Cask have a will, and that will hates the gods.
Enemy Mine: Loki, occasionally, when the threat is really dire.
He once reneged on a promise to help Tyr overthrow Asgard, because the reason he'd set the plot against Odin into motion was that he thought Odin had dishonored Frigga. When he realized he'd been wrong about that, he switched sides.
When Surtur tried to destroy the universe by taking the Eternal Flame from Asgard, Loki tricked him with illusions, which he was able to do because he'd fooled everyone into thinking that he was on the Dark Elves' and Surtur's side. But Loki likes messing around with people in this universe — which he couldn't do if an Omnicidal Maniac destroys it all.
During Siege, Loki eventually switched sides and helped the Asgardians.
Energy Absorption: Mjölnir can be used to absorb and redirect virtually unlimited amounts of energy. Thor has used Mjölnir to absorb Hyperion's atomic vision, the Silver Surfer's Power Cosmic attacks, and Heimdall's blue cosmic flames. Absorbed energy can be amplified 10 to 100 fold before being redirected at Thor's attacker. One of Mjölnir's greatest feats occurred in Thor #407, where the hammer managed to contain the galaxy-destroying power of a Null Bomb before using the power to reignite a dying sun.
Eternal Recurrence: The comic takes a foretold event in mythology, Ragnarok, and turns it into a wash-rinse-repeat cycle that sustains the ones who sit above in shadow. Almost every deviation from Norse Mythology can be traced back to this plot point.
Eureka Moment: Parodied. When Thor lost his Donald Blake persona, he Clark Kented as Sigurd Jarlson. Still, a worker in a construction site saw his reaction and movements when a dragon appeared in the city (don't ask), and got a mistaken Eureka Moment: Sigurd Jarlson is Spider-Man!
The Fair Folk: Dark Elves are a recurring enemy to Thor and Asgard.
Flaming Hammer: Thor's "atomic flare" attack, which is performed by spinning Mjölnir so fast that its own atoms are set ablaze, creates a weapon that "burns with the might of a thousand suns", according to Thor #351.
Fantasy Gun Control: On the whole, the realms of Asgard and beyond stick to an apparent technology level appropriate to the time of the Norse Myths. Somewhat averted during the Surtur Saga, however, when the hosts of Asgard and Valhalla fought alongside the mortal armies of Earth for the fate of the worlds; some of the warriors of Valhalla took a shine to the mortals' machine guns and took some home with them afterward.
Flowery Elizabethan English: The Marvel Universe version of Thor used to speak in archaic English resembling Shakespearean prose. This was dropped in the most recent restart of the series; the Asgardians now speak modern English, though their speech patterns are both formal and faintly archaic.
Fusion Dance: When Thor and Eric Masterson were in the far reaches of space trying to restore the Incredible Hercules to normal, Eric was mortally wounded when he performed a Heroic Sacrifice to save Thor. Thor saved Eric by binding their life-forces together, which saved Eric but forced him to share a body with Thor. When Thor was later banished from Earth by Odin, Eric was entrusted with Mjölnir and all of Thor's innate abilities.
Hijacking Cthulhu: In a Thor comic book annual, Demogorge the God-Eater, an ancient deity whose very purpose is to destroy gods, is awakened before its time and opposed by an alliance of heroic gods from Earth's various pantheons. He ends up eating them all, but Thor's will is too strong, and not only takes over its body, he forces it to restore all the deities it had already eaten!
Human Aliens: Asgardians are this and are almost indistinguishable from regular humans.
Humans Are Special: Thor certainly thinks so. Few other gods in the Marvel Universe (and there are many) are as willing to stand up for and protect humanity as he is, and his best friends and teammates are just humans with exceptional abilities and dedication to good. His best friend amongst humans is Captain America, if that tells you anything.
I Am Not Left-Handed: When Thor stays on earth, he usually holds back his full strenght,note Except against exceptional opponents with physical power equal to or greater than himself, such as Absorbing Man, Hulk, Juggernaut, or Hercules but when Thor cuts loose, Curb-Stomp Battle usually ensues. Just ask Iron Man about that.
Idiot Ball: Thor and Balder have been tossing this back and forth ever since their returns. First, it was Thor leaving Loki alive and not doing a thing to challenge his exile while disappearing for long periods of time leaving Asgardians without guidance in a strange, new world and using up a near-omnipotent power source to save his girlfriend. Balder picked it up and decided to trust Loki, not check up with the local mortals about Doom, and did not prepare at all for SIEGE. He recognized he was an idiot, but Thor has picked it up again.
Loki himself grabs the ball whenever he teams up with Dormammu, since Dormammu always screws him over when ever they team up.
And then there was the time Hela made a deal with Loki and a deal with Mephisto.
Immortal Immaturity: During Jason Aaron's run the Thor of the future constantly complains about current Thor and past Thor's lack of intelligence and maturity:
Future Thor: And you idiot children have yet to learn what it means to be a king!
Involuntary Battle to the Death: In the story-arc that introduces Beta Ray Bill, the otherworldly champion who is also worthy to wield Mjölnir, Odin declares that Bill and Thor must fight a duel to the death to settle the question of who gets to keep it. Bill wins, but saves Thor's life; Odin gives Mjölnir back to Thor and commissions a new hammer from the dwarfs to give to Bill. It's implied that this is the outcome Odin intended all along.
Legacy Character: The power of the Thunder God is accessible to anyone else who can prove worthy of wielding Mjölnir (see below). Mortals such as human architect Eric Masterson and the alien nicknamed Beta Ray Bill would wield the hammer when Thor was otherwise indisposed. Later on, Masterson would get a slightly weaker hammer of his own to wield, becoming the hero Thunderstrike. Likewise, Beta Ray Bill was given his own hammer, Stormbreaker, with powers roughly equal to Mjölnir. Unfortunately, this means that Bill isn't seen that much anymore, because having Thor teamed up with an equally powerful pseudo-god is ridiculous overkill for most situations.
And there's Red Norvell, who's basically Thor, but if he was raised in the blue-collar midwest instead of Asgard. Though he was only able to lift Mjölnir after absorbing a copy of Thor's essence and was never actually worthy himself, he eventually gained his own imitation hammer. Interesting in that he's the only one of the legacy characters to not only claim the position of God of Thunder, but also the position of Odin's son, although that bit was mostly just Odin trying to tick Thor off. He's still alive, and has all his powers, but we haven't seen him in over a decade. It's possible that he died off-panel during Ragnarok, but in that case he'd probably be back anyways like the rest of 'em.
Just about anyone can wield Mjölnir in a crisis, provided that they do so for unselfish reasons.
Let's You and Him Fight: Justice Peace and Thor in Thor #371. This one has consequences: the fight delays Justice Peace's pursuit of the serial killer Zaniac, who kills several more people before they catch up with him.
Lightning Can Do Anything: Lampshaded in Thor #390, after Thor seals a hole in the ground with a "pin-point accurate" lightning bolt.
Black Knight: But—but that scientifically impossible!
Captain America: Not to a Thunder God!
Literal Surveillance Bug: In Thor #357-8, the villains' secret base has an insect infestation that's actually a swarm of Literal Surveillance Bugs created by their own Gadgeteer Genius, who is working with them unwillingly and wants to know what they say when he's not around.
Medium Blending: Some of the Jack Kirby-drawn issues featured photography of models of objects in place of drawn art, such as with the first appearance of Ego, the Living Planet.
Nice Job Fixing It, Villain: In Thor #381, Hela has Thor on the ropes, completely incapable of lifting a finger to help himself — until Loki decides to make things a bit more entertaining, and inadvertently gives Thor an out.
No-Holds-Barred Beatdown: Rare considering his power level, but Thor has been subject to a few of these over the years from either the rare more powerful foe or a time when Thor has been depowered.
No More for Me: In Thor #364, a drunk stumbles into an alley and runs into the irate goats pulling Thor's chariot, who've been stranded in the alley while Thor is... temporarily discommoded. He promptly declares he's going on the wagon. At the end of the following issue, the same guy, drunk again, winds up in the same alley, where he's confronted with the goats, the chariot, and a 6'6" frog in full Thor regalia. As he flees, he swears that this time he really really is never going to touch the stuff again.
Non-Human Humanoid Hybrid: Thor is of Asgardian, Jotun, and Elder God descent, the first from his father Odin, the second from Odin's mother Bestla, and the third from his true mother Gaea. This is what makes him stronger than the average Asgardian.
Oh My Gods!: "By Odin's beard!" (and other variations) was Thor's catchphrase.
Only the Chosen May Wield: Only someone who is a hero judged worthy by Mjölnir's magic can lift Thor's hammer. This makes it a shock in Beta Ray Bill's premiere story when this seeming monster qualifies as such.
Thor's hammer (and its powers) could only be wielded by "someone worthy" such as Thunderstrike or Beta Ray Bill. Others who have briefly wielded, or at least lifted, Mjölnir include: Captain America, Wonder Woman, Rogue (in an alternate universe where she permanently absorbed Thor's powers and personality), Superman thanks to an emergency suspension of the worthiness enchantment, an unidentified paramedic, and Alex Power in "Thor and the Warriors Four" (though this is out of continuity), Conan the Barbarian (in a crossover comic not in continuity with either franchise) and Red Norvell.
Wonder Woman easily wields it, which makes tremendous sense, since for one, she's obviously worthy, but she's also a literal demigod herself, albeit an Greek demigod, not Norse. (And if you ever wanted to see what a Greek-Norse demigoddess might look like, enjoy◊.)
Walt Simonson once said that you have to be "worthy" in the Viking sense of the word. I.e. be a hardened killer. That doesn't fit with Superman or even Captain America though. Cap is a soldier, so that maybe just enough.
Our Giants Are Bigger: Ymir, Surtur, and the Celestials; the Masters of the Black Star, and in Avengers: Infinity which featured Thor as one of the main characters, the "Walkers" (who are planet-sized) and the Infinites (who can hold planets in their hands).
Painting the Medium: The new Thor of 2014 noticeably speaks in the usual Asgardian font, but thinks in regular text - implying that she's not even Asgardian herself.
Parental Favoritism: Odin towards Thor. Poor Loki was made well aware of the fact he was less loved.
Balder, having recently discovered he is Odin's son, is also under this curse as well.
Artistic License - Physics: Thor achieves flight by flinging his mystic hammer with all his strength, and then grasping the leather thong at the base of the handle (somehow managing to do so a split second after releasing the hammer, before it is out of reach); he is then pulled into the sky by Mjölnir, traveling upon the momentum of his own throwing strength. That part's actually possible, at least according to The Physics of Superheroes. And yet, he can stop to hover in mid-air (sometimes shown doing so by twirling Mjölnir like a helicopter blade, but just as often not) and then resume flight at full speed... not to mention being able to throw the hammer as an attack, have it return to him, and then resume flight, all without plummeting to the ground while Mjölnir is out of his hands and he has no other visible means of staying aloft. Of course both Thor and the hammer are magical.
Often in modern interpretations, throwing the hammer is used for a boost in take-off speed, and Thor flies under his own power afterward.
Plot Relevant Age Down: After Loki sacrifices himself in Siege, Thor resurrects him... only to bring him back as a child.
Power Copying: The Absorbing Man can absorb the physical traits of anything he touches, up to and including the uru metal of Mjolnir. As far back as the 1960s, he proved capable of absorbing a direct cosmic bolt from Odin himself. Because of this, even Thor, for all his power, often has to come up with a clever way to exploit whatever is he's absorbed the power of.
Power Nullifier: In Thor #429, Thor created a vortex that negated all mystical energy within, robbing the Juggernaut of his invulnerability for a time.
There is the Kirby Connection, specifically via the Fourth World comics; when Kirby was not allowed to end Thor's story with Ragnarok, he moved to DC and created a new mythology. It started with the immortal line "There came a day when the old gods died..." (if you look very carefully at the illustration, you can even make out Thor); the ancient world from which New Genesis and Apokolips were formed is strongly implied to very much have been like Asgard, and in visions, revealed to have harbored equivalents of the Asgardians. The Asgardian gods of Earth, including Thor who actually had a walk-on role in the Fourth World comics, are believed to be "descendants" of them because they received an exceptionally large portion of the God Wave which empowered all "modern" gods (except for the Fourth World New Gods) after the Old Gods died...
The question of where Thor was before Donald Blake found the hammer is answered by Odin "revealing" that Donald Blake had been and was always Thor, transformed into the form of mortal man as punishment for arrogance. Much later, in J. Michael Straczynski's run, this gets retconned again, as it's now suggested Blake is (and always was) a person of his own, and not just Thor in human form.
At the climax of "The Surtur Saga", Odin sacrifices himself to keep Surtur from ever entering the Nine Realms again. Later on, it's revealed that both Odin and Surtur now exist in a limbo state, where Odin must continuously fight Surtur to stop him from coming back to life, and this is the reason Odin cannot be revived. However, in Thor #618, Thor does revive Odin, but neither the writer of the comic nor the characters seem to remember that this should mean Surtur can now return as well.
During Fear Itself, a recent issue of Journey into Mystery has Kid Loki meeting with Surtur, with the end result of Surtur one day rising from Limbo, and the cycle of Ragnarok being once again continued.
The Reveal: The fact that Donald Blake was an amnesiac Thor Odinson all along came as a bit of a surprise to Silver Age readers.
Roaring Rampage of Revenge: During a fight between Thor and Algrim, Malekith (Algrim's boss) dropped them both down a shaft in an attempt to kill them in lava. Thor was able to fly out before hitting the lava; Algrim wasn't so lucky. He clung stubbornly to life out of sheer tenaciousness. The Beyonder, during Secret Wars II, noticed this. Intrigued by Algrim's desire for vengeance, he teleported him to safety with strength and durability increased to twice that of Thor, and the new identity of Kurse. As his memory was damaged by his time in the lava, Kurse blamed Thor for what had happened and began to unleash a No-Holds-Barred Beatdown. Thor was eventually able to hold his own by donning the power-doubling Belt of Strength... so the Beyonder increased Kurse's power again, to four times that of Thor. It took Thor, Beta Ray Bill, and Power Pack working together to take him out even briefly. When he awoke, his memory had improved, and he remembered that not Thor, but Malekith who was truly to blame. The heroes didn't know where Malekith was, so they teleported him to Hel, to cause trouble for the death goddess Hela. How durable was he? Not all the armies of Hel could stop him, and nor could Hela's instant touch of death. Finally, he managed to track down Malekith (in Asgard in disguise). Malekith didn't last past the end of the issue.
Used as an Invoked Trope in the recent comics. The only reason no one has killed the reincarnated-as-a-kid Loki yet for his past deeds is because Thor has sworn to do exactly this trope if anyone hurts Loki and he finds out about it. Or if Loki just suddenly dies, even if there's no proof, becuase Thor's not an idiot.
Rogues Gallery: Many of Thor's enemies come from Norse myth, of course, including the rock troll Ulik, the fire giant Surtur and archenemy Loki, although from the very beginning the Thunder God also tangled with a number of mortal criminals like the Wrecker, Mister Hyde, the Cobra, the Absorbing Man, Zarrko the Tomrrow Man, and the Grey Gargoyle. Later mortal additions included bad guys like Quicksand and the Mongoose.
Royals Who Actually Do Something: Thor is a prince (often crown prince) who would take action himself than endanger others. Odin often leads his armies into battle and will fight threats himself when he knows his army cannot handle it. The same with Tyr and Balder. Loki too is technically a prince and will do his own dirty work if he has too.
While Loki's reincarnation as a child after accidentally causing the destruction of all of Asgard leaves both his royal staus and how long he can stay alive in question, it also means that almost no one trusts him so he has to work on his own. Within 3 issues, he's already put a good deal of a team together with only words and tricks, no magic at all.
The All Mother seem pretty involved in recent comics, and have Loki doing various jobs for them as well.
Running Gag: Journey into Mystery #625 involves Loki getting progressivly worse news and reporting it to Hela/Mephisto:
Loki (near start): Dire News!
Loki (after an interrogation with a henchman): Dire-er news!
Loki (after a momentus discovery in the final pages): Dire-est news!
Sadly Mythtaken: Many details were changed or invented for the series. Notably, Thor is blonde, clean-shaved, unmarried and spoke with a Shakespearean accent! It was all justified eventually, though; in the Marvel Universe, Ragnarok isn't a one-time event. Every time it happens, Asgard resets, and the same gods, giants, etc are reborn, but with mostly minor changes in appearance and personality.
Screw Destiny: Odin planned to break the cycle of Ragnarok, which was destined to eternally repeat itself through his son Thor. His plan succeeds.
When fighting the Celestials to save a world full of people (some of them innocent) from them, Thor tapped into the magnetic field of the entire planet and hit Arishem The Judge with it. This got Arishem's attention.
And now Kid Loki is out to prove that Tanarus is not the God of Thunder, and has usurped Thor's place in everyone's memories.
Sharing a Body: Thor and Donald Blake, after Thor's resurrection seem to be doing this, with Thor more in control after Donald Blake calls for Mjölnir with his cane, and Don more in control in their mortal form. Whether or not they are the same person with different personas, or two separate people is when things begin to get hazy. They mostly converse in an odd spiritual void or an alternate version of where they currently are.
Sif and Jane Foster had to share one body for awhile. Valkyrie and Samantha Parrington had to thanks to the Enchantress.
And, somewhat shockingly, in a Black Panther comic; for a little while, it is implied that Thor was actually shot dead, but when he gets up again, it is revealed the bullet pierced his skin and then bounced off his skull, briefly knocking him unconscious.
Shorter Means Smarter: Loki is considered short by frost giant standards which makes him normal size for everyone else. He also is far smarter than other giants and even most gods.
Shout-Out: Walt Simonson's use of "beyond the fields we know" to indicate a transition to Asgard was a homage to the works of Lord Dunsany, who originated the phrase in his own fantasy stories.
Small Reference Pools: This trope is part of what inspired Stan Lee to create this character: the Greek myths were well known in North America, but the Norse ones were much less so, thus giving Lee a fresh source of material for stories for the Marvel Universe. In doing so, Lee and Kirby provided generations of kids their first exposure to this mythology.
Smite Me, O Mighty Smiter: Thor to Zeus. Zeus never had any intention to kill Thor since Zeus has a pact with Odin which makes Olympus and Asgard allies.
Spanner in the Works: In one alternate universe, Odin hid Mjölnir in a cave, intending for Don Blake to find it as he did in the 616 universe. Unfortunately, Odin's plans go awry when Jane Foster finds Mjölnir instead, and gets turned into Thor's Distaff Counterpart. She ends up fighting crime as "Thordis" for a long time, and eventually Odin has to personally intervene to make sure Mjölnir ends up with Blake. Jane, for her part, becomes a goddess herself and moves to Asgard permanently.
In another alternate universe, Loki's imprisonment in a tree was lifted slightly early, just early enough he was freed just before Blake found the hammer in its cane form. Loki stole the cane and Blake/Thor was killed by the Kronans; as a result, a war of the gods started up, requiring Odin to give up an eye in payment to Hela to see Thor restored to life (and I think Sif also died as she entered into Hel with Mjölnir, using Thor's gauntlets to be able to carry it to restore it to him so he might try and fight his way free).
Loki's resurrection is, depending on the scource, either the reason The Serpent is back, the key to the only way to defeat The Serpent, or both. Either way, by bringing him back, Thor caused the Fear Itself crossover.
Speed Blitz: In a fight with Hela, who, at the time, could take his soul with a touch, Thor attacked with speed and power beyond her comprehension.
Splash Panel: Thor #380, chronicling Thor's epic battle with the Midgard Serpent, contains (with the exception of the final page) no panels less than a full page in size.
Standard Hero Reward: In Thor #364, a dying king offers it to Thor if he will save the kingdom from its attackers. Thor does save the kingdom, and the princess seems quite keen on the idea, but Thor politely declines the reward and suggests she should rule the kingdom in her own right.
Stop Worshipping Me: Thor is a legit god by Marvel's definition and will let everyone know around know it, loudly. However, he is not that kind of god and does not want to be the focus of any religion, especially after he saw his followers kill innocent people.
As with the two drunk examples, someone at Marvel apparently did not like this and has Thor force the beings of Earth to worship him after becoming king of Asgard.
Super Reflexes: Thor can react fast enough to block bullets and energy attacks, even those fired from a few feet away. He has snatched arrows, artillery shells, and missiles right out of the sky and dodged attacks from speedsters like Mongoose.
Offically, all the gods have this to some degree.
Super Speed: In Thor #354, Thor described himself as having the "swiftness of the very lightning itself." He has flown fast enough to catch Hermes, attacked Quicksilver faster than his Super Reflexes could register, and moved so fast that even fellow Asgardians Heimdall and Hela could barely see him. One of Thor's attacks, the Atomic Flare, requires Thor to whirl his hammer "faster than thought" in order to set its molecules ablaze. Finally, in order to use Mjölnir's time travel abilities in Journey into Mystery #85, Thor must spin the hammer "faster than light."
Super Strength: Compared to mortals, just about everyone in Thor's corner of the universe has this to some degree. Even elderly geriatric gods have been listed outright as considerably stronger than Spider-Man. Thor is strong enough to go toe-to-toe with opponents like Hercules or Juggernaut. However, a select few like Surtur, Kurse, Mangog, and a very angry Hulk, make Thor look like a weakling. He tends to compensate through greater skill or range of powers though.
Super Weight: Normally Level 4, but bumped up to Level 5 when using Mjölnir, and level 6 when in full possession of the Odinforce.
This Was His True Form: In Thor #375-376, Thor battles a succession of foes that are actually innocent bystanders transformed by Loki. Each reverts to their own true form when they're defeated.
Time Master: Thor sacrificed most of Mjölnir's time manipulation powers (Time Travel, time reversal, etc) in Thor #282, but he retained the ability to create localized time freezes. These freezes are mostly used for protection, because they prevent supers from using their powers. Thor used one to prevent Hela from taking Odin's soul in Thor #198-199.
Undying Loyalty: Thor is pretty famous in the Marvel U for being incredibly loyal to his friends and the cause of good. Hurting one of his fellow Avengers, a hero he respects or someone under his protection is a wonderful way to get Mjölnir repeatedly smashed against your face. He is also very fond of humanity, even going as far as challenging his own father in defense of them.
Thor often invokes this in his friends.
Unskilled, but Strong: Thunderstrike initially possessed all the powers of Thor, but none of the Thunder God's centuries of experience. He would often ignore or completely forget Mjölnir's elemental powers in favor of brute strength, which left him frustrated and overwhelmed by skilled opponents.
Unstoppable Rage: Thor's always a formidable enemy in a fight, but if you push him hard enough, you'll learn just how scary and angry a thunder god can be. Mister Hyde, the Wrecking Crew, and Quicksand all found this out the hard way.
Thor also has the Warrior's Madness, which boosts his strength 10 fold, but leaves him in a berserker state. In Hulk 440 the title character was mad enough to push Thor towards the ground with one arm even in this state though.
Warrior's Madness supposedly increases Thor's strength 10 fold. Whether it actually does this is murky. Also, the Hulk 440 incident is questionable thanks to Thor being depowered in his ongoing at the time and the writers of Hulk wanted a full powered Thor which Thor may or may not have been thanks to a Continuity Snarl.
Up to Eleven: The only reason Thor exists is because Stan Lee was stumped as to how he could top his last creation—The Hulk, who was the strongest man alive. For Stan, the answer was for his next character to not be a "man" at all!
Weather Control Machine: Thor's hammer allows anyone who can use it to summon storms of varying strength, which they can control and disperse at will. Thor himself has these powers innately.
What Happened to the Mouse?: Red Norvell is out there, somewhere, just dicking around with the Power of Thor (tm). He hasn't been seen in nearly a decade, despite being alive, well, and empowered. Partially justified because he was never as into the "superhero" side of things as the Asgardian side of things, but that still doesn't explain why he no-showed Ragnarok.
What Year Is This?: In Thor #371, time-travelling lawman Justice Peace appears out of thin air and asks a bystander "What's the date, citizen?" He has to ask a second time, less politely, before the bystander pulls himself together enough to reply.
Thor: The reason I did fail, Captain America, is that I be the God of Thunder. I am not slow-witted, but my task in the All-Father's plan doth concern itself more with action than reflection! What I saw not till this battle is that, to adapt myself to thee mortals, I have accustomed myself to withhold my full might! 'Twas a gradual thing. In Asgard, I have struggled 'gainst Gods. On Midgard, we have mostly met human menaces. To avoid the murder of these men, and to avoid the humbling of my friends, I came to act as less than I am. To thrill, to the thunder of battle, I forgot I am the god thereof!
Ye Olde Butcherede Englishe: While official material tends to downplay it to a point is doesn't become this (sometimes), parodies and other shallow depictions of Thor all over just ooze this trope.
You Can't Fight Fate: Many prophecies are to pass in Asgard with the entirety of Asgard knowing of these prophecies many years before they occur, like Thor being slain by the Serpent. Despite all of Asgard's best efforts to keep this from happening.
You Didn't Ask: In Thor #337 — though, since it's Thor, it's "Thou didst not ask."