Fan-character? o.o Like OC for a fanfiction? Lol Oh boy you shouldn't have let me see this question XD I'm a writer and man have you got your work cut out for you.
I have a male that I'd like drawn if you're interested. It's for a K-ON fanfiction. He has black hair and sometimes wears glasses so you can draw him with or without them. His hair is short and kinda messy-ish (also known as "smexy anime guy hairstyle" for most people XD) and he has a signature jacket that kinda sorta looks like Izaya's from Durarara except the fur is on the hood and bottom, not the ends of the sleeves and it isn't as long. It's a dark color (I'm vague on the jacket color on purpose). And he has a necklace with a small cross. Not named yet.
I have two females but the anime they're going to be from is a secret if that's okay x3.
1. She's a sempai and has brown hair (not black) a little past her shoulders. She has heterochromia (one eye blue the other is green) and she always has an "I'm too cool"/mischievous look on her face. She wears a V-Neck black sweater outside of school and simple khaki slacks with it. Oh and her name is Leiko Kitsune
2. She's an underclassman. She's shorter (hence being an underclassman) and has sandy-ish hair but more on the brown side. She has a bow in her hair tied in such a way that it makes it look like she has neko ears :3 Her eyes are brown and she wears...cute clothes? But no frills or laces x3 Her name is...hmm I'm stuck between names so I'll get back to you on that one.
I have more but I'll stop for now :3 That should be enough to keep you busy if you decide to draw them.