
If the player chooses to side with The Beast, Nix will steal the RFI before Cole and Kuo can destroy it and uses it against the Beast in an attempt to stop him. Kuo references this just before Cole activates the RFI, claiming "You made the right choice. If the player chooses to work against the Beast, after powering up the RFI at a substation, she will sacrifice herself to stun the Beast and buy Cole time to get to the next substation. However, using the RFI will kill every Conduit on the planet, but Nix claims "I don't care what happens to me! All I care about is that the Beast dies! Are you gonna kill The Beast? Be a man of your word!" The reason for this is simple: the Beast killed all the Corrupted-including the ones she bonded with. When The Beast arrives in New Marais, Nix has a change of heart from her destructive personality and tells Cole to kill the Beast using the RFI rather than work with him. If the player chooses Kuo's suggestion, Nix bonds with the monsters anyway and unleashes them while Cole is chasing Bertrand in the trainyard, telling him "My babies are gonna come in real handy." After explaining about Bertrand having a link with the Corrupted, she offers Cole the chance to let her bond with the monsters and unleash them on the Militia over Kuo's suggestion of exposing Bertrand.She asks Cole to swap powers with her when the team finds the Transfer Device as an alternative to Kuo's ice powers (canonically, Cole chooses Kuo which leads to Nix dumping Cole).She offers to fool the rebels into thinking Cole is a hero by dressing her up as a Militia and letting her go on a killing spree, then Cole would show up and stop her, making him look like a hero.She suggests firing a streetcar into a cane plantation to rescue Kuo over freeing police officers to help Cole take over the plantation.Afterwards, she appears during the main missions in the campaign, offering destructive alternatives that earns Cole Evil Karma if he picks them over the other option. She persuades him to help her destroy a Militia speech in exchange for the Blast Core she has. Nix hears about Cole MacGrath's presence in New Marais and meets him while he is looking for Lucy Kuo. One such attack had her screaming "You come into my swamp! My home!" while tricking the Militia into shooting each other. She spent the next years tormenting the Militia who came into the swamplands, driven by vengeance from Bertrand's evil actions as Bertrand himself ended up sought for destruction of Conduits. Nix gained her Pyrokinesis powers as thanks to her Conduit gene, activating her powers. One day, Joseph Bertrand gathered all the swampland's people in a clearing and activated the Ray sphere, killing everyone in the blast except himself and Nix. Nix grew up in the swamplands outside New Marais, where she was looked after by her mother.
