I'm thinking two 3-packs would be ideal. One for the Visitors and one for the Resistance.
Visitors 3-pack :- Diana, Lydia, normal trooper (lizard head maybe or cap and sunglasses)
Resistance :- Mike Donovan, Julie Parish, Willy (or perhaps Kyle Bates)
![Image](https://images-na.ssl-images-amazon.com/images/I/41Zzsz0WZsL.jpg)