Hmm. As to identities within my network...
I think I would probably be the Giles of the group. 😛 I tend to be older, more bookish, and more levelheaded than the rest of the group. Although since I'm always joking and taking the piss out of everyone, maybe I'm more Spike. Wow, Giles/Spike. That's a truly frightening thought. Maybe I should get myself committed...
My wife (that's yellowcrayon) is definitely the Willow of my buddies. More a Season One Willow than anything else. Yikes, right? 😉
My little brother is definitely Dawn (I say, laughing at myself). Annoying, often irrational, but ultimately loyal, dependable, and courageous.
The Buffy of the group is an older gal who kicks ass and takes no names. YC will know to whom I refer. 😉
Anya would be "Buffy's" daughter, a redhead with all the attendant temperament issues.
Xander, hmm. I don't think I really have a Xander. There are a few friends with various traits of Xander, but nobody who really embodies all of Xander's goofy everymanitude.
I hate Tara. But I do know one -- sorta-kinda like Tara on crystal meth. 😛
I know a couple folks sorta like later-life Cordelia, but no early-on Cordys, thank heaven...
I can think of two friends of mine who are definitely Andrews. 😉
That's it for now, I think...