Well, the only theory I have is them not being aliens from Exo Planet but rather human experiments subjected to the revolution of earth. Now upon knowing the truth, the tested subjects try to escape and those injected with toxins become monsters while those aren't become the lucky ones. But then, the lyrics to the demo song sings something about obsessive love and it's the obsession that turns them into a darker side of them, the monsters. Something about spilt personality disorder intrigued me to come up with this crap. Well, we all Exo-ls have ton of theories so....let's just jam to the spoiler choreography and wait for D-Day.

Sensitive topic but what about the influence of something like schizophrenia? This just gives me the amnesiac feel?