Flandre Scarlet, the Vampire Pursuing the Hunter, is very protective of her childlike older sister, who came to her from another world. So much so that it's almost like their roles are reversed. While this Flandre may appear cold and dispassionate, she shares the same destructive urges as the other Flandres―she's just better at suppressing them. Her sister is more dear to her than anything.
Report From a Parallel World (Universe Code: Unknown)
Somewhere in a land far to the west, Remilia Scarlet mysteriously disappeared before achieving her ambition of becoming a Great Demon Lord and ruling over a modern-day Makai of her own creation. Her little sister and closest advisor, Flandre, vanished soon after. What became of those sad souls left behind at the Scarlet Devil Mansion differs slightly depending on the specific parallel world. However, in no world was it pleasant.
Report From a Different Parallel World (Universe Code: Unknown)
Flandre defeated a vampire hunter in an alleyway filled with purple smoke in a city in China. They were a follower of the faith, far more powerful than your average hunter, but they still weren't a match for Flandre. Unfortunately, for some reason, Flandre never managed to find the paradise she sought. As the years went by, more and more began to question the existence of vampires until she eventually faded away.
Report From Another Parallel World (Universe Code: Unknown)
This Flandre was born as the heir of the Scarlet family. She was an only child, never having an older sister called Remilia. She was raised with care and led a happy life.
Sometime Somewhere
"Now do you understand, vile sister of the devil?"
"What was that?"
"You saw what I have seen: other versions of you in other worlds."
"But I'm pretty sure I saw you die in one of them."
"No surprise there. That can happen when you travel through time."
"Wow, it seems anything goes, huh? Must be nice."
"So, have I convinced you? This will be much easier if you just let me cut off your head. I'm very busy, you see. I have countless more worlds to visit."
"Can't you manipulate time? How can you be busy?"
"Proper time is different."
"Sure, if you say so... Either way, showing me the fate of those other Flandres doesn't change anything. They're not me. They're not the Flandre standing before you right now."
"Hmm, is that right?"
"Yes. Unlike them, I will destroy you."
"How strange... You always seem to say that."