"Luna.exe: I am Luna.exe"

"Luna: I'm Luna, the original"

"Nightmare Luna: I am Nightmare Luna"

"Luna Killer's: and I'm Luna Killer's or Kiara, whatever you want to call me, and now what's your name?"

the "twin sisters say, one at a time" and yes they are the same people but consider themselves twins,and Moonly(Nightmare) is the most protective one,and Luna.xe can be a bit psychopath and cannibal and Kiara(Luna Killer's) is psychopath and murderer,and Luna is normal,both three are vampires