We already saw the initial party. Now it’s time for the rest of the explorers.
This group includes both of the xenos explorers in the game (other than White Dwarf). Amallyn is a Eldar, with a very long gun.
Grekh is a Kroot, and a somewhat shorter gun.
Esperno gets the second best hat in the game.
Janus is such a dashing swashbucket he doesn’t wear a face mask.