Deadpool 2: Who Is Josh Brolin's Character, Cable?

A live-action version of Cable blessed homes across the world recently when the trailer for Deadpool 2 hit the internet, and oh boy, Josh Brolin looks awesome as the time-travelling leader of X-Force. [See him in the newest trailer here.] He's going to be a major part of the newest superhero starring super-powered mutants.But who is Cable, and where does he come from? Those answers aren't simple, as many characters from the X-Men comics have overly complicated and convoluted backstories, especia