The end of last year’s Deadpool promised us Cable. Ryan Reynolds himself, speaking as the title hero at the film’s close, even speculated that Keira Knightley could play the role. Today, Cable was cast, and we’re (somewhat) sad to report that it’s not Keira Knightley.

It’s Josh Brolin.

Brolin officially joined the Deadpool 2 cast today for the first part of a four-picture deal that will presumably also include the R-rated superhero team-up flick X-Force. This is the second major comic book role in Brolin’s filmography, since he’s already booked to play Thanos in the next two Avengers flicks. Deadpool 2 project will allow him to stretch his wings as a comedic straight man alongside Reynolds’ goofball Merc with a Mouth.

Now, if you loved Deadpool but you don’t follow comics, you might be asking yurself “Who’s Cable?” Well, that’s a little complicated but let’s try the short version.

Cable

Cable, co created by Deadpool co-creator Rob Liefeld, first appeared in New Mutants in 1990, except that wasn’t his first time on comic book pages. He actually first appeared in Uncanny X-Men as an infant Nathan Summers, son of Scott “Cyclops” Summers and Jean Grey-clone Madelyne Pryor, in 1986. Taken to the future as a baby, he was raised in part by the time-displaced minds of Scott and Jean, who were brought forward in time by Cable’s half sister. Cable grew to become a great mutant warrior who eventually made his way to our time. Got all that?

He’s telepathic and telekinetic, with cybernetic body parts and the ability to wield really huge future guns. It’s a little complicated.

Cable’s initial visual aesthetic and his introduction through Liefeld’s massively successful X-Men comics made him one of the most popular characters of the 1990s. His pouch-covered, robot-armed original look has since made him the poster boy for the era. His popularity has endured well beyond the ‘90s boom, though, and his multi-film casting was one of the most highy anticipated superhero moments of 2016. Everyone from Brad Pitt to Michael Shannon was linked to the role over the last year. Now Brolin’s nabbed it, giving him another major franchise foothold and giving Cable an authoritative and powerful actor to embody him.

A Knightley-less Deadpool 2 arrives next year.