Any ideas for names for my characters?

Okay, so I'm writing something you could call a story. I guess. I have a few characters, but I have no idea what name to give them. I want something that sounds cool and original. I mean, names like Sarah, Nathalie or Mathew are overused. MORE than overused.

First Character :

Gender : Female

Age : 11 [and a half]

Hair : Dark Brown, Curly and Puffy.

Eyes : Piercing Green, slightly slanted.

Skin : Pale Olive, she has a few scars.

Persona : She's mature beyond her years and is highly intelligent. She doesn't seem to give a sh*t about her social life. All she seems to care about is conspiracies. She's mysterious and doesn't reveal much about her past or her family. She has a strong personality and never under estimates others. She is also shown to be diplomatic and stoic. Though she never mentions having taken martial arts lessons, she knows how to kick someone's butt though she often looses since most of her opponents are older and stronger than her.

Race : Human...or so she says.

Status : She's the main character and occasional narrator of the story. Her last name is Vixen, so, I only want her first name.

Fun fact : She sometimes talks to herself and never smiles/laugh.

Second Character :

Gender : Male

Age : 10 [soon turning 11 in the story]

Hair : Black, dark...as the night. Cut short but spiky.

Eyes : Warm tone of brown. Dark brown.

Skin : Pale, but not horribly white.

Persona : He's slightly naive and influential, which explains why "First Character" acts quite cold towards him. He is shown to have a crush on _____ Vixen, but it never seems to grow into love. He can be impulsive and childish but he damn serious when he has to. He is shown to be really protective but he's usually the one who gets his a$s kicked. Therefore, he's a stubborn, but nice guy.

Race : Human

Status : He's _____ Vixen's close friend and is the usual narrator of the story.

Fun fact : He's an artist, poet, musician and writer. All rolled into one.

Third Character :

Gender : Female

Age : 15

Hair : Brown, not too light, not too dark.

Eyes : Like "Second Character"

Skin : Like "Second Character"

Persona : She can appear as a b*tch at times, but really, she only acts mean because she cares. She can be brutally honest and often hurts the feelings of those around her. Therefore, she has a lot of friends. Unlike her brother, she is more skeptic and distant, but she has a sensitive side. She has an easy laugh and loves to joke. Often hyper and cheerful, she usually gets on "First Character"'s nerves.

Race : Human

Status : She's "Second Character"'s older sister.

Fun fact : She and "First Character" end up getting along well.

Fourth Character :

Gender : Female

Age : 6

Hair : Black

Eyes : Same as "Second Character".

Skin : Same as " Second Character".

Persona : Typical childish and naive six years old kid.

Race : Human

Status : She's "Second Character" and "Third Character"'s little sister.

Fun fact : Her role isn't that important, but she makes the story a bit less hardcore.

Other :

-Classmates [Would appreciate more name ideas for those squirts.]

-Teachers [Same]

-Others [If you have random name ideas, go on!

PS : I don't know why I'm relying on strangers for that but...oh well, what the crap. I don't mind. As long as the names rock!

PS#2 : This is a fictional story, though the beginning is more a slice-of-life kinda thing.