The two hired cretins who hold the saferoom with Mordecai while everyone else flees the noise.
When Carl and Princess Donut enter the Saferoom, nobody is there except Mordecai and the two cretin bodyguards. Everyone else — Louis, Firas, Katia and Bautista — has been driven out by Samantha's shrieking, and the household's other muscle, Bomo and The Sledge, is close to killing her over it.
The bodyguards stay put through all of it without comment, a fixed presence in the room whose only real distinction this chapter is that they did not leave.
Not individually described here; a matched pair of hired cretins stationed inside the saferoom.
Standing security inside the party's saferoom, unmoved by the chaos that emptied it.
Also appears in books you've already read — spoiler-safe to their endings: