Problems with my house guests! Please help!

See, I'm having a few फ्रेंड्स over today. But I'm having some problems with them... आप see, they're kind of... eccentric...
Okay, let's start with this first girl. She kinda reminds me of sexi_emo_girl... आप see, she has a huge obsession with knives. It's always knives this, knives that! She brought her own चाकू when she came here! And a while ago, that bloodthirsty girl actually got sent to juvie for attacking a bunch of people with one! And now, I'm seriously worried she's gonna try to assault someone here या something if they give her the slightest provocation! Oh, and she LOVES the color red. She's always wearing it... and I don't even think I need to ask why...
Thank Lord, the 2nd guy is way easier. He's actually really nice. So much he is kind of a pushover... His प्रिय color is blue. Kinda सूट्स him, huh? And he loves गाना and roses... आप get it, peaceful, artistic type.
The other one is this really cute, charming, लोकप्रिय girl. आप know the type. She's like the क्वीन of the world. Everybody loves her and she can charm most people into doing basically anything she wants. Her biggest flaw is her Thanatophobia (overly great fear of death). But hey, her life is so awesome, it kinda makes sense!
Finally, there are a couple of blond siblings. Brother and sister. Um... I didn't even invite them! Apparently, the लोकप्रिय girl did! When they came over at first, I almost kicked them out before she came to explain if it weren't for the big sister's stubborn insisting to stay. (The little brother isn't as stubborn as she is. He's और of a smart guy.) Oh, and... they were two of those who were attacked द्वारा the mad girl! So I think it's सुरक्षित to say every time they're together, it's pretty akward.
Anyway, I'm freaking out, it's as crazy as Lewis Caroll's Wonderland या something over here... Please help already!