Red has epilepsy. This means she can't have a pet; they're all robotic. She can't go near robotic things.
Smoke has a broken leg. Of course, the doctors replaced it with a robotic one.

Being Outstanders, it's a miracle that the two are even alive. Since they are Outstanders, they have to stick together, in their own space. But since Red's epilepsy will be triggered by Smoke's robotic leg, how will the two best friends protect each other?