Ah, Rob Liefeld, you have so much to answer for… from what was clearly an undisclosed promotional agreement with extraneous pouch manufacturers and the weirdly large energy gun lobby to a mysterious loathing of feet. Despite his odd depiction of musculature and skeletal function, he did give us our first visuals of Cable, the time-travelling Summers cyborg who looks older than his dad and can pack more in his pouches than Batman does in his utility belt. He also had a hand in the creation of Domino, but Cable’s the headliner, despite Domino’s amazing portrayal in Deadpool 2.
A grizzled veteran of an apocalyptic future, Cable hit the ground running with the first incarnation of X-Force. Guns, explosives, a cybernetic arm and a glowing yellow something-or-other in the puckered scar of his ruined left eye socket. It was some time before his familial link to the Summers boys was revealed, same with his latent telekinetic ability. Now he’s a headliner, Deadpool’s best buddy, and defacto dad to Hope Summers. For a guy who was essentially just muscles, guns, belt pouches and attitude, he’s intrinsically intertwined into Marvel lore.
Domino was introduced as little more than a support character for Cable, but has evolved over the years into a very competent mercenary with her probability alteration powers helping things work out in her favor. The best thing about her may well be Zazie Beetz’ portrayal, but with her current role as an intelligence operative for Krakoa means there’s more to her story yet to unfold.