Longshots: would anyone play Amanda Ripley or any other Alien&Prometheus-series character (maybe one of the other Androids?) against my Christopher Samuels? Alternatively, I'd check out a game looking for Alien series characters.
It's probably too early, but I'd be game for playing a Knight of Ren. So if those are needed anywhere, I'd consider that too. More tropes/ideas are listed on my journal here.