Multiple characters for player 1 or 2

So I've made 3 characters for my prototype. They all function correctly but currently they're hardcoded to work either with keyboard or X360 input.

I'm currently making the move to the new preview Input Manager 1.0.0. My issue is how do I assign a specific character to a player, and how do I make it so when player 1 (Keyboard) selects a character, their inputs follow the keyboard and the same goes for player 2. On the chance that both player 1 and player 2 pick the same character, I need to have them as separate inputs still.