Problems with my house guests! Please help!

See, I'm having a few বন্ধু over today. But I'm having some problems with them... আপনি see, they're kind of... eccentric...
Okay, let's start with this first girl. She kinda reminds me of sexi_emo_girl... আপনি see, she has a huge obsession with knives. It's always knives this, knives that! She brought her own ছুরি 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 অথবা 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 পছন্দ color is blue. Kinda স্যুইটস্‌ him, huh? And he loves গান গাওয়া and roses... আপনি get it, peaceful, artistic type.
The other one is this really cute, charming, জনপ্রিয় girl. আপনি know the type. She's like the কুইন 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 জনপ্রিয় 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 আরো of a smart guy.) Oh, and... they were two of those who were attacked দ্বারা the mad girl! So I think it's নিরাপদ 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 অথবা something over here... Please help already!