Monster who has poison in their veins
Good news! This monster doesn't have allergies! They actually have an undiagnosed neurological condition. Oh.
Monster whose senses are tingling. Something of great import is about to happen! Either that, or they just became acutely aware of a hitherto unknown allergy.
Monster who is amazed the group of humans they've joined hasn't discovered who they are yet, and really hopes their luck holds! They like these ones.
Monster who is bored as hell, and wishes they were two. Then they could play together, as monsters do.
Monster who needs to not only destroy someone, but the idea of them as well
Monster who doesn't need your mathematics to figure things out, all they need is fresh entrails. Really fresh entrails.