With roots in sci-fi and fantasy, the mythology of Marvel's Thor stretches across multiple genres with ease. Soon, those various realms will be battlegrounds in a rapidly escalating and massive war. "The War of Realms" is currently unfolding in writer Jason Aaron and artist Russell Dauterman's "Mighty Thor," which pits the title character and her allies against the treacherous Dark Elf king Malekith, and the rival realms of Asgard that make up his Dark Council.

RELATED: Odinson's Future Unfolds In Marvel's "Unworthy Thor" by Aaron, Coipel

This November, Aaron gives Thor fans a double dose of mystical hammers and cosmic fantasy as he welcomes former Mjolnir wielder, the Odinson, back to the forefront of the Marvel Universe with the launch of the new ongoing series "The Unworthy Thor," which features art by acclaimed artist Olivier Coipel. Meanwhile, in "Mighty Thor" Aaron and Dauterman will turn the "War of Realms" into an intergalactic conflagration with a new arc titled "The Asgard/Shi'Ar" War.

CBR News spoke with Aaron about bringing the Odinson back and his initial quest to retrieve the hammer of the Thor from the Ultimate Universe, the events that will lead to "Asgard/Shi'ar War," and how his two Thor books will connect.

CBR News: You checked in briefly with the Odinson early on in this volume of "Mighty Thor," but come November, he's returning to the Marvel Universe in a major way.

Jason Aaron: Yeah, we went several issues without seeing him after "Secret Wars," and then we got a tease of him being held prisoner somewhere in "Mighty Thor" #5. In November, we'll start give you the answers to where he's been all this time and what he's gotten himself into.

Those answers start to come in "The Unworthy Thor," and one of the big questions about that book is how connected it is to the larger story you're telling in "Mighty Thor." Will the Odinson have any idea about what's going on with the "War of Realms" when his new book kicks off?

He's been off on his own since "Secret Wars," so there's a lot that he's missed and doesn't know about, including what's happened in Asgard and what's happened with Loki and Freyja.

Initially, he's off dealing with his own problems while Jane Foster is dealing with all the chaos going on in the various realms. As you can imagine though, once the Odinson gets everything sorted out on his end he's going to be very involved in everything that's going on back on Midgard and in the other realms.

The other big questions is what kind of character will the Odinson be when we catch up with him.

He's still kind of the guy we last saw. He's very haunted by being unworthy, and very driven to reclaim his mantle. He's a darker and angrier version of the character than we've seen in the past.

Will the series include flashbacks to what happened to him during his off panel post "Secret Wars" exploits? Are you ready yet to reveal the mystery of what made the Odinson unworthy back in the 2014 event series, "Original Sin?"

You'll have to wait and see on that, but we do flash back and see how he got himself into whatever sort of mess he's in. That also brings us right up to the present day.

I feel like most of the stuff I've done with the character has been a blend of fantasy and sci-fi. This is definitely a cosmic and a space story, but it's still pretty much the same guy from "Thor: God of Thunder," which I think was very much a fantasy driven book. Heavy Metal"-esque was kind of what we were going for.

This is definitely in that vein, and it's drawn by the amazing Olivier Coipel. It's the first time he's drawn Thor in a while. I'm just trying to give him as much cool, crazy stuff to draw as I can think of.

"Unworthy Thor" welcomes Olivier back to the world of the character, and over in "Mighty Thor" you're continuing your collaboration with Russell Dauterman.

Right. I'm pretty lucky; I'm working with two of the greatest Thor artists ever, at the same time, on two different books. I have no complaints about that.

On one hand, I think there's a different flavor and tone to these two different books and two different Thors, but at the same time, it's still all one big story. It's still the same story I've been telling, going back to "Thor: God of Thunder" #1.

What sets the Odinson's quest for the otherworldly Mjolnir in motion?

It starts with him back on the moon again, where he lost his hammer in the encounter with the Unseen, which is what Nick Fury became at the end of "Original Sin." This is the first time the Odinson has found himself face to face with the man who was once Nick Fury since Fury whispered in his ear. That encounter sends the Odinson off in a new direction, and that's how he finds out that there's another hammer out there; the hammer of Ultimate Thor that we saw fall into the Marvel Universe at the end of "Thors" [Aaron's "Secret Wars" series].

Someone has found out that it's here. So that sends the Odinson off to track it down.

Who are some of the characters and adversaries the Odinson will initially tangle with in his quest for Ultimate Thor's hammer?

Right out of the gate we'll see Odinson butting heads with Ulik and a bunch of trolls, and one of the main villains of the arc is the Collector; a being who most people know from the "Guardians of the Galaxy" film and who wants to get his hands on anything that's rare and powerful in the Marvel Universe. A hammer of Thor certainly qualifies.

He's just one of a number of cosmic entities that we'll see in this arc that are desperate to get their hands on that hammer.

If and when the Odinson finds Ultimate Thor's hammer, will he be able to lift it? Didn't that have a worthy enchantment on it as well?

Yes, that's the big question. This is very much a quest for that hammer, but he has no idea if he'll be able to pick it up. He wasn't able to pick up his own hammer, but this is the hammer of a dead Thor from a dead universe. I think there are a lot of questions about the nature of that hammer, and there are still some questions about the Odinson's worthiness.

While all of that is going on, "War of Realms" will continue to build and escalate in "Mighty Thor." What can you tell us about your current plans for that book?

Our current arc, "Lords of Midgard," is very much an Earth-centric story. After doing so much bouncing around between different realms in the first arc, I wanted to come back to Earth in a big way and do a very Midgard-centric story of Thor battling a couple of newer villains; the new Silver Samurai, and the Exterminatrix, who was last seen in "Original Sin." I liked the idea of putting Thor into combat with a couple people the Thunder God has not faced before. Plus, I wanted to do something that focused on the evil corporations that we've been playing with, like Roxxon.

This is part of the ongoing "War of the Realms" story, so we come back to that in a big way with issue #13, where we'll see the return of the League of Realms who we last saw back in "Thor: God of Thunder." Those characters will return, along with the introduction of some new ones, which means it's a brand new version of the League.

They're like the Avengers of the Ten Realms. They're made up of characters from the various races you find there. Its members include a dwarf, a giant, a Light Elf and some other characters.

They come back in a big way in issue #13, but before we get to that, issue #12 is a special issue, and we've got some strange stuff that happens at the end of the "Lords of Midgard" arc. If you look at the cover for issue #11, it shows Thor and Jane Foster fighting side by side. That leads us into issue #12, which is a special "origin of the hammer" issue. It's the origin of Mjolnir in a way that we've never quite seen it before. There have been a couple of different versions of how the hammer came to be and why Odin forged it. We're looking at the nature of the hammer and its enchantment.

Clearly, things have changed over the years. Most recently we saw that even Odin himself wasn't able to lift the hammer, and Jane Foster's relationship with the hammer and the power of the hammer has been a little bit different than what we've seen before. There's been a lot of questions about the hammer, and issue #12 is where we get some big answers.

In "Mighty Thor" #9, you gave us a scene with Loki talking to his comatose mother, Freyja, that showed how you kept the moral evolution of the character, but cast him in a role where he has to play his old villainous self for the good of Asgard.

Yeah, I wanted more of a bad guy Loki without throwing away all the great character work that Al Ewing and Kieron Gillen had done over the years. I wanted a sympathetic Loki who still can't help but be a bad guy.

You can kind of figure out for yourself what you believe and don't believe when he talks about what his motivations were in terms of what he did to his mother. The arc that he's on will continue to be a big part of the book. He's a little busy in "Vote Loki" right now where he's running for President, but we certainly haven't seen the last of him in the pages of Thor.

I like the undercover crime/spy story feel to Loki's arc. It's very much got a vibe of, "Be careful what you pretend to be, because you might become it."

Right, and he told Freyja before he stabbed her in the back, "You never should have sent me to him." She sent him undercover to infiltrate Malekith's cabal, and that didn't exactly go the way she planned. Of course, there's also the fact that Loki's biological father, Laufey, is back among the living for the first time ever in Marvel Comics' history. He's a character that Loki has a complicated relationship with, but there's still some sort of draw there.

When we last saw Loki, he was in Jotunheim, hanging out with his dad. Where that leads, and what his plans are there, we'll have to wait and see.

Come November, the scope of "War of Realms" will escalate and become an intergalactic affair -- the "Asgard-Shi'ar War."

Yeah, that's our next big arc. I've had this circled for quite a while. I wanted to do a big fantasy versus sci-fi story, so this will be me throwing all those toys into the mix. We'll have all the cool cosmic stuff surrounding the Shi'ar, from Gladiator and the Imperial Guard, to the Starjammers, along with all the cool toys from Asgard. I'm starting with the image of Asgardian dragon ships sailing through space while fighting against Shi'ar space ships, and we go from there.

This is all part of the "War of Realms" story. Malekith has been the clear villain of my run ever since he first showed up. Even when he doesn't seem to be the one at center stage, you can bet he's behind the scenes pulling strings. The "War of the Realms" has begun, and it's continuing to spread to different fronts.