In the Marvel Cinematic Universe canon, the Thor movies tend to get overlooked in favour of Iron Man, Captain America and Guardians of the Galaxy.
But Marvel Studios hasn't forgotten the Odinson, and it's bringing us a third helping of hammer-twirling, Asgardian-punching comic book action – this time in the form of a veritable Twilight of the Gods.
Here's everything you need to know about the thunder god's newest adventures in Midgard and beyond in Thor: Ragnarok.
Thor: Ragnarok trailer - epic smack down incoming!
The first teaser trailer has arrived and frankly it looks amazing.
In it we get a glimpse of Hela – the Norse goddess of death – confronting Chris Hemsworth's Thor, and it does not go well for him or his hammer. Alas, poor Mjolnir, we hardly knew thee.
Hela invades Asgard (apparently singlehandedly), while Thor is taken prisoner by Valkyrie and the Grandmaster in order to fight in their arena.
We get a delicious new look at Tom Hiddleston's Loki as well as Thor's "friend from work", Hulk.
Um, it looks like Mark Ruffalo's big green character has different feelings.
All of this happens to the strains of Led Zeppelin's entirely appropriate 'Immigrant Song'. Valhalla, I am coming.
Once you've got your breath back you can also check out Waititi's San Diego Comic-Con mockumentary revealing what Thor has been up to while the Civil War was going on.
Rumour has it that the film will be about 100 minutes long, which is likely to make it the shortest MCU instalment yet.
Thor: Ragnarok release date - The road to Infinity War
Shooting began in Australia in July, hot on the heels of Spider-Man: Homecoming. Chris Hemsworth's reunion with his hammer and armour was originally scheduled for July 28, 2017, but later slipped to its current release date of October 27, 2017, in the UK and November 3, 2017, in the US.
Ragnarok has also been described as a 'bridge' between the ongoing MCU plots and the big bust-up with Thanos in Infinity War.
Thor: Ragnarok cast - The Thor and Hulk show
You've probably guessed from the title that Chris Hemsworth will indeed be back as Thor, and you would be right.
And he's sporting a new, shorter haircut, and apparently missing his hammer Mjolnir.
Jaimie Alexander will also be returning as the warrior Sif to give Marvel a third chance to vaguely hint at a romance between her and Hemsworth's Odinson.
And despite Tom Hiddleston trolling about 'not having spoken to Marvel', it seems that he will be returning for a fourth stab at Thor's sly stepbrother Loki – last seen disguised as Odin at the close of Thor: The Dark World.
Mark Ruffalo will also be showing up as Bruce Banner and his big green alter ego the Hulk after - like Thor himself - missing out on the Captain America: Civil War action this year.
Though we're not exactly sure how big his role will be in the movie, considering how quickly he was done on set.
A glimpse Thor holding a card on set that bears the address of Doctor Strange's Greenwich Village base – the Sanctum Santorum – led to speculation that after Thor's cameo in his debut Marvel film, Benedict Cumberbatch's Sorcerer Supreme would return the favour. Strange's appearance in Thor: Ragnarok has now been confirmed, and Hiddleston has led us to believe that he might be there to help find the missing Odin (more on him in a bit).
Two of the Warriors Three – Tadanobu Asano (Hogun) and Ray Stevenson (Volstagg) – have been spotted in Australia, making it very likely that they will show up in the movie. No sign of Zachary Levi (Fandral) yet, though.
Stellan Skarsgård is apparently not coming back as Dr Eric Selvig, nor is Natalie Portman reprising her role as Jane Foster (although she would apparently be up for coming back eventually). She broke up with Thor, apparently.
In Foster/Portman's place we will apparently have Creed actress Tessa Thompson, who will play the Asgradian warrior Valkyrie – who will serve as both a foil and love interest for Thor.
"We wanted Thor to encounter somebody that was near his equal, and that his relationship with Jane may have evolved in unexpected ways in between The Dark World and Ragnarok," Marvel Studios president Kevin Feige told Entertainment Weekly. "And we wanted to pit him against a character who was much more his equal and in many ways his superior.
"Valkyrie is trying to not embrace any sort of Asgardian heritage that she has. Thor thinks maybe that will create a bond between them and, on the contrary, she wants to forget it all entirely."
Jeff Goldblum – who is coming back for Independence Day: Resurgence shortly and teased us with the idea of a superhero cameo not that long ago – will play the Grandmaster, a troublemaker of cosmically powerful proportions with a love of games.
And Star Trek's Karl Urban will be taking on the role of Thor's long-time foe Skurge, an Asgardian also known as the Executioner.
Anthony Hopkins's Odin – who had been replaced by Loki in The Dark World – is coming back. He's been spotted on set in full hobo mode – leading us to suspect that he might have been wandering amnesiac on Earth since Loki got to him. And Idris Elba's Heimdall is also returning, with Marvel apparently overlooking Elba's comments about shooting the last film.
Waititi has also lined up his own cameo as 'Planet Hulk' character, the rock-like alien Korg. And veteran actor Clancy Brown is providing the voice of the fire giant, Surtur.
The director was also keen to have John C Reilly's Rhomann Dey (you know, from Guardians of the Galaxy. Right?) show up, but apparently that was not to be.
Thor's flatmate Darryl (Daley Pearson) won't be back either. Sorry.
Thor: Ragnarok director - What We Do in the Nine Realms
After his comments about the "particularly wrenching" experience of working on Thor: The Dark World, it should come as no surprise that director Alan Taylor won't be back for Thor 3.
He definitely won't be 'pulling an Elba', as New Zealand's Eagle vs Shark and What We Do in the Shadows director Taika Waititi has taken over instead. He claims not to have had a plan to start with (which we don't entirely believe).
We're sure he'll join with us in trying to forget his acting role in 2011's Green Lantern.
Thor: Ragnarok plot - An apocalypse in name only
The film is named for the Norse end of the world myth Ragnarok - which is supposed to kill off the gods and bring mankind to the brink of extinction (quite literally - leaving only two survivors left to repopulate the world).
In Marvel's comics, Thor has faced Ragnarok several times (go figure), although theoretically he finally managed to end the cycle forever.
It shouldn't all be doom and gloom, though, as Ruffalo has said that Hulk and Thor will be embarking on a "universal road movie" across the Nine Realms, and Waititi's involvement suggests that we can expect a share of the typical Marvel comedy rather than a disaster movie of Man of Steel proportions.
Idris Elba has promised that "all the characters have a bit of a funny moment" in the movie – even his habitually po-faced Heimdall.
Waititi has hinted at the tone of the film, saying "the new logo suits the '70s/'80s sci-fi fantasy that this film is becoming". Anyone else thinking of The Neverending Story right now? He has also said that he is basically ignoring the other two Thor films and the rest of the MCU, which is a bold move and no mistake.
The logo might be getting even more '80s (with a little homage to Thor co-creator Jack Kirby thrown in), if this branded T-shirt can be believed.
Nor does it sound like Ragnarok spells an ending for the MCU or even Hemsworth's Thor, as he's already been confirmed for Avengers: Infinity War.
Waititi shot a Facebook live at the end of shooting, which revealed that Miek – an ally of Hulk's from that same storyline – will appear in the film.
And a trailer Easter egg hints at that other Marvel heroes, including Beta Ray Bill, Ares and Man-Thing are also out there, though whether they will make an appearance in the flesh is currently unknown.
Comic-Con also screened a mockumentary showing what Thor was up to during Civil War, taking full advantage of Waititi's skills, although it's not online yet. We did however get a look at the amazing new, '80s-tastic logo.
The footage also revealed some figures that apparently looked a lot like the Eternals – a race of space gods with a past linked to Earth (Marvel has a lot of different space god races knocking around). As Thanos is technically one of their members, an appearance wouldn't be out of the realms of possibility.
Although she isn't always strictly Thor's enemy, Hela is being billed as the main villain of the movie. There are plenty of other antagonists on the board, including Grandmaster and the ever-troublesome Skurge. The Comic-Con footage also gave a glimpse of the fire demon Surtur – a figure often connected with both the event and endless attempts to destroy Thor and his people – although if he is in Ragnarok, Marvel is keeping him well under wraps.
"[Hela]'s been locked away for millennia getting more and more cross, and then, with a mistake, she gets unleashed and she ain't getting back in that box," Blanchett told Entertainment Weekly.
"[Sakaar is] basically where every wormhole across the universe dumps out its trash, so you get people from all walks of life with all sorts of incredible abilities and powers.
"No one cares what prince or king Thor may have been in another world. Also, his strength is pretty easily matched with those he finds himself amongst."
And the connection to Infinity War could possibly mean that Thanos – or at least some of the missing Infinity Stones – could have a part to play in the film. That link was heavily hinted at in Thor's Avengers: Infinity War vision (the one Joss Whedon clashed with Marvel execs over) and, incidentally, Grandmaster has been in possession of one of the stones in the past...
And it looks like the Celestials (the giant space gods first glimpsed briefly in Guardians of the Galaxy) may be back – at least if Waititi's snappy headgear is anything to go by.
Whatever happens in this film, Hemsworth, Thompson and Ruffalo have been spotted on location for Infinity War, so will probably be back together soon.
Thor: Ragnarok rumours - Cameos and connections
It will come as no surprise to hear that there are rumours about the ways in which the movie will tie into the wider MCU.
A half-built Avengers Quinjet has been spotted on the Thor: Ragnarok set, which indicates that one or more of Thor and Hulk's other teammates could put in an appearance, as the pair are probably the least likely to be found flying around in the jet on their own.
We've also heard that the Cotati could show up in film. The plant-like alien race have a strong connection to Pom Klementieff's new Guardians of the Galaxy Vol 2 character Mantis, which could indicate a link between the two movies. No word on whether she might make an appearance herself yet.
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