The Female Singer, has appeared in most Guitar Hero games but Guitar Hero: On Tour, standing in the Male Singer's place for songs with female vocals (though that is not exactly the case with X's "Los Angeles", which is sung by both a male and a female vocalist, like John Doe and Exene Cervenka do in the original version). She is American. In all games but one, she is depicted with blonde dreadlocks kept back with a red headband, soft smudge blue eye makeup and a mole on the left side of her face near her bottom lip. In Guitar Hero II, Encore: Rocks The 80's, III, and Aerosmith, she wears a green mini jacket, a small red top that leaves the midriff exposed, with the word rock printed in black, a silver necklace, a cameo-style skirt with black belts with gray, silver and white markings, ripped up fishnets, black boots, a red cloth band on her left arm, four black bracelets on her right arm, red painted fingernails and silver hoop earrings to finish the look, whereas in the original game, her blond dreadlocks were kept back with a blue headband with red zig-zag lines and she wore a torn white blouse with black bra straps and a black fire symbol, blue ripped denim pants with a black belt with a white buckle, black boots and a black bracelet on her left arm.
- Many players call her "Jessica" due to her normal appearance though she could possibly be named after Jennifer Lesser, one of the artists from the first Guitar Hero game who drew her picture from the characters video in the extras.
- According to the producers in the first Guitar Hero game, she was slated to be one of the Guitar Heroes but they ended up not using her genre.
- In Guitar Hero: On Tour, she is replaced with a black woman and has a gray t-shirt, with knee high boots, blue jeans, and close-shaved black/brown hair, somewhat like Skunk Anansie's frontwoman Deborah "Skin" Dyer.
- She was the only female singer in the game until Hayley Williams in Guitar Hero World Tour.