While she’s been a supporting character in Deadpool’s corner of the Marvel universe, she’s primarily tied to the X-Force, and has even been Cable’s confidante and romanic interest.
Since Cable is also involved with Deadpool 2, perhaps we’ll see a similar dynamic on the big screen.
Along with this natural gift, Domino is a skilled mercenary, trained in several forms of martial arts and able to use a variety of firearms.
For those unfamiliar with Domino, she is a mutant who can subconsciously manipulate probability around her to make improbable (note: not impossible) events occur, this giving her a lot of “good luck” and making her opponents “unlucky.”