Most shippable is a tie between Big Boss and Revolver Ocelot. There are so many options for both of them. BB because everyone wants him, and Ocelot because he’s a slut who doesn’t bother to separate romantic and platonic affection.

Least shippable character: idk there’s so many who suck. Most of them no one is trying to ship. Got Coldman. Major Zero. Maybe Huey.