Question: Josh Brolin was cast as which Marvel Comics character in the X-Men universe?

Context articles: Untitled Avengers film
Ultimate Nick Fury
ResurrXion
Uncanny X-Cast
Cable (comics)
Junkpile
Marvel NOW!
Josh Brolin
Avengers: Infinity War
Deadpool 2

The untitled Avengers film is an upcoming American superhero film based on the Marvel Comics superhero team the Avengers, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.
 It is intended to be the direct sequel to 2018's "", as well as the sequel to 2012's "Marvel's The Avengers" and 2015's "" and the twenty-second film installment in the Marvel Cinematic Universe (MCU).
 The film is directed by Anthony and Joe Russo, with a screenplay by Christopher Markus & Stephen McFeely, and features an ensemble cast that includes Robert Downey, Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Benedict Cumberbatch, Evangeline Lilly, Karen Gillan, Anthony Mackie, Tom Holland, Zoe Saldana, Dave Bautista, Paul Bettany, Scarlett Johansson, Jon Favreau, Gwyneth Paltrow, Sebastian Stan, Don Cheadle, and Pom Klementieff.
General Nicholas Joseph "Nick" Fury is a fictional character appearing in comic books published by Marvel Comics' Ultimate Marvel section as a different version of Nick Fury or Nick Fury Jr., his son and successor as director of S.H.I.E.L.D. He has a substantial presence in all the Ultimate Marvel comics, appearing first in "Ultimate Marvel Team-Up" and "Ultimate X-Men" and later reappearing regularly in "Ultimate Spider-Man" and finally securing a regular, recurring role as the general of S.H.I.E.L.D. and the leader of the Ultimates, a re-imagining of the Avengers.
 This character was designed to look like Samuel L. Jackson, the actor who later went on to portray Nick Fury in several Marvel movies and television shows set in the established Marvel Cinematic Universe.
ResurrXion was a Marvel Comics event involving brand new plot points and fresh starts for its "Inhumans" titles and "X-Men" titles in order to establish a new status quo for both franchises after the events in "Inhumans vs X-Men" ended.
 This event focused only on Inhumans and X-Men titles as all of their ongoing story arcs post-Secret Wars were wrapped up once "Inhumans vs X-Men" resolved all of the ongoing story arcs revolving around those titles.
 One of the most noteworthy aspects of this event is that it returned the X-Men comic books to their status as one of the forefront franchises of Marvel, a position that the X-Men hasn't held since the 90s when the X-Men were Marvel's top-selling franchise.
 This assuaged many fears from fans that Marvel was slowly killing off the franchise and replacing it with the Inhumans due to 20th Century Fox currently owning the movie rights for the X-Men.
The Uncanny X-Cast is a niche Comic book audio podcast that features Marvel Comics' Mighty Mutants, the X-Men.
 Started in 2006, the X-Cast reunited two X-fans, Brian Perillo and 2014 Emmy Award Winning Rob Briscoe.
 Perillo had been reading X-Men and other comics consistently for over 25 years.
 Bringing a unique gift of a nearly eidetic memory, Perillo is able to cite off-hand specific issue numbers, writers, and artists to major story lines and events in X-Men history.
 Briscoe, however, returned to regular comic reading after a long hiatus and continues to refine his knowledge on the intricate workings of the X-Men universe.
 Perillo brings wisdom with a rich knowledge of comics history, and Briscoe continues to bring a sense of freshness and vitality to the comics-podcast industry.
 Due to their individual histories, these two professional podcast journalists are able to draw in listeners and readers, both long-time and newly acquainted to the X-Universe.
Cable (Nathan Summers) is a fictional character appearing in American comic books published by Marvel Comics, commonly in association with X-Force and the X-Men.
 The character first appeared as a newborn infant in "Uncanny X-Men" #201 (Jan. 1986) created by writer Chris Claremont, while Cable's adult identity was created by writer Louise Simonson and artist/co-writer Rob Liefeld and first appeared in "The New Mutants" #87 (March 1990).
Junkpile is a fictional character appearing in American comic books published by Marvel Comics.
 The character appeared in Marvel Comics's 2099 universe, a look at superheroes in the year 2099.
 He was one of the main antagonists of a future incarnation of the X-Men called X-Men 2099, and briefly was affiliated with both the X-Men and SHIELD.
Marvel NOW!
 is a comic book branding for the relaunch of several ongoing comic books published by Marvel Comics, that originally debuted in October 2012 with new #1 issues.
 The relaunch also included some new titles, including "Uncanny Avengers" and "All-New X-Men".
 Described as a shifting of the Marvel Universe following the conclusion of the "Avengers vs. X-Men" storyline, Marvel NOW!
 entailed changes to both the publishing format and the universe to attract new readers.
 Publishing changes included new creative teams for each of the titles and the in-universe changes included changes to character designs and new storylines.
 It marked the next stage of the Marvel ReEvolution initiative, which began in March 2012.
 The original run went through several waves before coming to an end in May 2015 at the start of the "Secret Wars" storyline.
 A second Marvel NOW!
 debuted in 2016 following the "Civil War II" storyline.
Josh James Brolin ( ; born February 12, 1968) is an American actor.
 His first role was in the 1985 film "The Goonies".
 Since then he has appeared in a wide number of films, and is best known for his work as Llewelyn Moss in "No Country for Old Men", young Agent K in "Men in Black 3", George W. Bush in "W." and Dan White in "Milk", for which he received Academy Award and SAG Award nominations for Best Supporting Actor.
 Other roles include "Hollow Man", "In the Valley of Elah", "American Gangster", "True Grit", and "".
 In 2015, he appeared in "Everest" and "Sicario".
 He has also made two appearances through motion capture and voice acting as the villain Thanos in the Marvel Cinematic Universe, a role he is slated to reprise in the upcoming films "" and the untitled Avengers film.
 In April 2017, Brolin was cast as Nathan Summers / Cable as a part of a four-film contract in the "X-Men" film series, with his first appearance intended to be in "Deadpool 2".
Avengers: Infinity War is an upcoming American superhero film based on the Marvel Comics superhero team the Avengers, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.
 It is intended to be the sequel to 2012's "Marvel's The Avengers" and 2015's "" and the nineteenth film installment in the Marvel Cinematic Universe (MCU).
 The film is directed by Anthony and Joe Russo, with a screenplay by Christopher Markus & Stephen McFeely, and features an ensemble cast that includes Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Cobie Smulders, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Bradley Cooper, Pom Klementieff, Scarlett Johansson, Benicio del Toro, Tom Holland, Anthony Mackie, Chadwick Boseman, Danai Gurira, Paul Rudd, and Don Cheadle.
 In "Avengers: Infinity War", the Avengers join forces with the Guardians of the Galaxy to confront Thanos, who is trying to amass the Infinity Stones.
Deadpool 2 is an upcoming American superhero film based on the Marvel Comics character Deadpool, distributed by 20th Century Fox.
 It is intended to be the twelfth installment in the "X-Men" film series, and a sequel to the 2016 film "Deadpool".
 The film is being directed by David Leitch from a script by Rhett Reese and Paul Wernick, with Ryan Reynolds starring in the title role alongside Morena Baccarin, T. J. Miller, Leslie Uggams, Brianna Hildebrand, Stefan Kapičić, Zazie Beetz, Josh Brolin, and Jack Kesy.