Deception

Here are the combinations for the invaders who are otherwise unavailable.
When collecting bodies:

- Invite a merchant and a pirate : a pesky little carpenter will come with them
- Invite a general and a wizard : an annoying messenger comes with them
- Invite a magic doll and a psychic : a curious little alien tags along
- Invite a gem guard and a swordsman : a witch comes along with them

(Information from Cheat Machine)