Monotone

Monotone is a man shapeshifter alien, a subspecies of average imposter. He is shaped like a black bean astronaut with legs. He has a plague mask that hides his visor, a sharp tuxedo with a red tie and a black hat. A yellow glow comes from his left eye.

Monotone is someone who is mysterious, quiet, intelligent, serious in his work as a hitman and apprehensive. is really unknown information about him.

Monotone's relationship with Black is unknown, it is only known that Black hired him to kill Boyfriend (He failed to do it).
Btw, Monotone and MonotoneDoc are the same person but not the same character

Monotone has the ability to change shape. This means that he can be the perfect clone of Boyfriend, Red, Green and Black and have their weapons when he uses the shapeshifter (although the voices of the impostor/crewmate that Monotone wants to be, are not 100% perfect)

Monotone can warped reality when he uses the shapeshifter. He did this when he tried to kill Boyfriend and warped reality to be more comfortable with the shape changes he uses. (This is only a possibility and it is not confirmed whether he can do it or not)

Being an impostor, Monotone is assumed to have high intelligence and the ability to be a manipulator.

Hobby: Monotone's hobby is supposed to be killing crewmates

Goals: Monotone's goal is to kill Boyfriend as Black asked him to, but he failed to do it.

Crime: Attempted murder (for trying to kill Boyfriend)