Last week, Marvel announced the full cast for their highly-anticipated Phase 3 adventure Thor: Ragnarok, which confirmed the widely-reported casting of Cate Blanchett as Hela and Tessa Thompson as Valkyrie. The studio also confirmed Jeff Goldblum as the Grandmaster, with Karl Urban joining the cast as Skurge. With production scheduled to begin later this summer, new details have surfaced about how the villainous Hela, Hulk and Valkyrie fit into the story.

Cate Blanchett had been rumored to play Hela for many months before she was confirmed by Marvel last week, with the rumor claiming that Hela has teamed up with Thor's evil brother Loki. This new villainous team reportedly kicks Thor out of Asgard, while destroying his hammer Mjolnir. It's been rumored that Thor ends up on a "gladiator" planet where he's forced to fight the current champion, Hulk. While those exact details haven't been confirmed, Entertainment Tonight caught up with Mark Ruffalo, who shed some new light on both Hulk and Hela in Thor: Ragnarok.

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"I think it'll be smashing. You'll see a lot more Hulk in this one. The Hulk gets Hulk-ier. The Hulk Hulks out. Hulk-ier and bigger. (Cate Blanchett) plays the worst of the worst. So evil. She is going to kill us. It's such a great part she gets to play. It's an inter-galactic buddy road movie, with Banner and Thor."

Last week's announcement was the first we've heard about Skurge's involvement in the story, and Karl Urban's casting as this Marvel Comics character. IGN caught up with Karl Urban, who revealed why he signed on to this highly-anticipated superhero adventure. Here's what he had to say below.

"I read a fantastic script that was action-packed and full of great characters. When I heard who was involved -- and the cast list dropped yesterday -- and [saw] the opportunity to work with [director] Taika Waititi, who I think is one of the most brilliant directors coming through, I made the decision it was something that I wanted to be a part of. And the character is fantastic. He's got a great arc to him. Obviously I can't say too much about it, but I'm really thrilled to be a part of the Marvel universe and to be working on Thor: Ragnarok."

Taika Waititi is directing from a script that was worked on by Christohper Yost and Craig Kyle, with revisions by Stephany Folsom. Production is slated to begin this summer in Australia, with Marvel already setting a November 3, 2017 release date. Be sure to stay tuned for more details as we get closer to production starting.