Marvel has confirmed the worst-kept secret in the galaxy: Mark Ruffalo will reprise his Avengers role as The Incredible Hulk opposite Chris Hemsworth in Thor: Ragnarok.

A full cast for the sequel was unveiled today - revealing that the heavily-rumoured Cate Blanchett and Tessa Thompson are joining the sequel along with newcomers Jeff Goldblum and Karl Urban.

Oscar winner Cate Blanchett is the movie's main villain Hela, the Asgardian goddess of death who has been the scourge of Thor in the pages of Marvel Comics dating back to 1964.

Cate Blanchett and Tessa Thompsonpinterest
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Creed favourite Tessa Thompson is Marvel's newest female superhero Valkyrie, a mighty warrior chosen by Thor's father Odin to bring lost souls to the promised land Valhalla.

Jeff Goldblum will be turning up as Marvel's Grandmaster, an immortal Elder of the universe who will always pursue amusement at any cost.

Lastly, former (and future?) Dredd star Karl Urban turns to the dark side and grabs hold of a mighty double-bladed axe to play the Asgardian executioner known throughout the galaxy as Skurge.

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Thor: Ragnarok stars - Cate Blanchett, Mark Ruffalo, Tessa Thompson, Jeff Goldblum, Karl Urbanpinterest
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Marvel Studios boss Kevin Feige announced: "The continuation of the epic Thor franchise will be powerful and unique, and with the additions of Cate, Jeff, Tessa, Karl, and Mark to the cast we have the makings of his most dangerous and heroic adventure yet.

"The sheer, raw talent each of these actors brings to the screen can't be quantified. Having any one of them join the Marvel Cinematic Universe would be an honour, and having all of them is incredible."

These new cast members join Thor franchise veterans Chris Hemsworth, Tom Hiddleston, Sir Anthony Hopkins and Idris Elba.

However, Feige confirmed last week that Natalie Portman will not return as Thor's love Jane Foster since the majority of Ragnarok is not set on Earth.

Thor: Ragnarok opens on October 27, 2017 in the UK and November 3 in the US.

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Justin is a freelance entertainment journalist and writer. He first joined Digital Spy as a freelance entertainment reporter in 2010 and also worked as a sub-editor for the brand, serving as Night News Editor from 2016 to 2024. Over more than a decade, Justin has covered numerous major entertainment events from the US and has interviewed a wide-ranging group of public figures, from comedian Steve Coogan to icons from the Star Trek universe, cast members from the Marvel Cinematic Universe and reality stars from numerous Real Housewives cities and the Below Deck franchise. Justin has also been on the ground to cover major pop culture events like the Star Wars Celebration and the D23 Expo. He's written for titles across the Hearst network, plus the likes of CBR and Us Weekly.